SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11...

73
SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN PLAN June 2015

Transcript of SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11...

Page 1: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

SW 17

0TH

AVEN

UE /

SW M

ERLO

ROAD

CONC

EPTU

AL DE

SIGN

PLAN

June

2015

Page 2: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

ACKN

OWLE

DGME

NTS

Pro

ject

Man

age

me

nt

Team

Ste

ve S

zig

eth

y, W

ash

ing

ton

Co

un

ty

Mik

e D

ahls

tro

m, W

ash

ing

ton

Co

un

ty

Mar

la V

ik, W

ash

ing

ton

Co

un

ty

Sh

elle

y O

yle

ar, W

ash

ing

ton

Co

un

ty

Su

san

Wri

gh

t, K

itte

lso

n &

Ass

oci

ates

, In

c.

Se

th B

rum

ley,

Ore

go

n D

ep

artm

en

t o

f Tr

ansp

ort

atio

n

Pro

ject

Ad

viso

ry C

om

mit

tee

Tod

d J

uh

asz,

Cit

y o

f B

eave

rto

n C

om

mu

nit

y D

eve

lop

me

nt

De

pt.

Bru

ce B

arb

aras

ch, T

HP

RD

Pla

nn

ing

& D

eve

lop

me

nt

De

pt.

Sh

eri

Sta

nle

y, B

eave

rto

n S

cho

ol D

istr

ict

Mik

e L

amb

ert

y, B

eave

rto

n S

cho

ol D

istr

ict

An

dre

w B

rau

n, C

lean

Wat

er

Se

rvic

es

Tom

Mill

s, T

riM

et

Co

nst

ance

Ko

sud

a, C

PO

6

Mik

e M

ulli

ga

n, B

eave

rto

n B

icyc

le A

dvi

sory

Co

mm

itte

e

Dav

id U

nd

erw

oo

d, W

oo

dC

o F

ue

l

Bill

An

ctil,

An

ctil

Plu

mb

ing

Ran

dal

Rin

gsa

ge

, Rin

gsa

ge

Ch

iro

pra

ctic

Ch

anm

any

Ko

r, M

anila

Mar

t

Tom

Pig

ne

ri, S

ou

the

rn C

al T

ran

spo

rt

Kat

hie

Ko

ellm

ann

, Sin

gle

-fam

ily o

wn

er

occ

up

ied

res

ide

nt

Fra

nci

s M

ahe

r, S

t. M

ary

’s H

om

e fo

r B

oys

Dal

e F

ish

bac

k, T

ual

atin

Val

ley

Wat

er

Dis

tric

t

Co

nsu

ltan

t P

roje

ct T

eam

Su

san

Wri

gh

t, K

itte

lso

n &

Ass

oci

ates

, In

c.

He

rman

us

Ste

yn, K

itte

lso

n &

Ass

oci

ates

, In

c.

Kar

la K

ing

sley

, Kit

tels

on

& A

sso

ciat

es, I

nc.

Jeff

Wh

itm

an

, Kit

tels

on

& A

sso

ciat

es, I

nc.

Way

ne

Bau

er,

WH

Pac

ifi c

Th

is p

roje

ct is

par

tial

ly f

un

de

d b

y a

gra

nt

fro

m t

he

Tran

spo

rtat

ion

an

d G

row

th M

anag

em

en

t (T

GM

) P

rog

ram

, a

join

t p

rog

ram

of

the

Ore

go

n D

ep

artm

en

t o

f Tr

ansp

ort

atio

n a

nd

th

e O

reg

on

De

par

tme

nt

of

Lan

d C

on

serv

atio

n a

nd

D

eve

lop

me

nt.

Th

is T

GM

gra

nt

is fi

nan

ced

, in

par

t, b

y fe

de

ral M

ovi

ng

Ah

ead

fo

r P

rog

ress

in t

he

21s

t C

en

tury

(M

AP

-2

1), l

oca

l go

vern

me

nt,

an

d t

he

Sta

te o

f O

reg

on

fu

nd

s.

Th

e co

nte

nts

of

this

do

cum

en

t d

o n

ot

ne

cess

arily

re

fl e

ct v

iew

s o

r p

olic

ies

of

the

Sta

te o

f O

reg

on

.

Page 3: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

Was

hingt

on Co

unty

, Ore

gon |

170t

h-Me

rlo Co

rrido

r Con

cept

Plan

CONT

ENTS

APPE

NDICE

S

Intr

od

uct

ion

2

01P

roje

ct P

urp

ose

an

d C

on

text

3

02P

lan

nin

g P

roce

ss8

03P

rop

ose

d C

on

cep

tual

Des

ign

23

04O

ther

Des

ign

Op

tio

ns

for

Co

nsi

der

atio

n27

1

AE

xist

ing

Co

nd

itio

ns

Rep

ort

BC

on

nec

tivi

ty R

epo

rt

CW

ater

Qu

alit

y an

d D

eten

tio

n R

epo

rt

DS

olu

tio

n A

lter

nat

ives

Mem

ora

nd

um

EP

AC

an

d P

ub

lic W

ork

sho

p #

1 S

um

mar

y

FC

om

mu

nit

y O

utr

each

Su

mm

ary

Rep

ort

GTr

ansp

ort

atio

n A

nal

ysis

Mem

ora

nd

um

HA

lter

nat

e R

ou

nd

abo

ut

Alig

nm

ent

IS

egm

ent

2 P

lan

nin

g L

evel

Co

st E

stim

ate

Page 4: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

SW 17

0TH

AVEN

UE /

SW M

ERLO

ROAD

CONC

EPTU

AL DE

SIGN

PLAN

June

2015

Page 5: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

ACKN

OWLE

DGME

NTS

Pro

ject

Man

age

me

nt

Team

Ste

ve S

zig

eth

y, W

ash

ing

ton

Co

un

ty

Mik

e D

ahls

tro

m, W

ash

ing

ton

Co

un

ty

Mar

la V

ik, W

ash

ing

ton

Co

un

ty

Sh

elle

y O

yle

ar, W

ash

ing

ton

Co

un

ty

Su

san

Wri

gh

t, K

itte

lso

n &

Ass

oci

ates

, In

c.

Se

th B

rum

ley,

Ore

go

n D

ep

artm

en

t o

f Tr

ansp

ort

atio

n

Pro

ject

Ad

viso

ry C

om

mit

tee

Tod

d J

uh

asz,

Cit

y o

f B

eave

rto

n C

om

mu

nit

y D

eve

lop

me

nt

De

pt.

Bru

ce B

arb

aras

ch, T

HP

RD

Pla

nn

ing

& D

eve

lop

me

nt

De

pt.

Sh

eri

Sta

nle

y, B

eave

rto

n S

cho

ol D

istr

ict

Mik

e L

amb

ert

y, B

eave

rto

n S

cho

ol D

istr

ict

An

dre

w B

rau

n, C

lean

Wat

er

Se

rvic

es

Tom

Mill

s, T

riM

et

Co

nst

ance

Ko

sud

a, C

PO

6

Mik

e M

ulli

ga

n, B

eave

rto

n B

icyc

le A

dvi

sory

Co

mm

itte

e

Dav

id U

nd

erw

oo

d, W

oo

dC

o F

ue

l

Bill

An

ctil,

An

ctil

Plu

mb

ing

Ran

dal

Rin

gsa

ge

, Rin

gsa

ge

Ch

iro

pra

ctic

Ch

anm

any

Ko

r, M

anila

Mar

t

Tom

Pig

ne

ri, S

ou

the

rn C

al T

ran

spo

rt

Kat

hie

Ko

ellm

ann

, Sin

gle

-fam

ily o

wn

er

occ

up

ied

res

ide

nt

Fra

nci

s M

ahe

r, S

t. M

ary

’s H

om

e fo

r B

oys

Dal

e F

ish

bac

k, T

ual

atin

Val

ley

Wat

er

Dis

tric

t

Co

nsu

ltan

t P

roje

ct T

eam

Su

san

Wri

gh

t, K

itte

lso

n &

Ass

oci

ates

, In

c.

He

rman

us

Ste

yn, K

itte

lso

n &

Ass

oci

ates

, In

c.

Kar

la K

ing

sley

, Kit

tels

on

& A

sso

ciat

es, I

nc.

Jeff

Wh

itm

an

, Kit

tels

on

& A

sso

ciat

es, I

nc.

Way

ne

Bau

er,

WH

Pac

ifi c

Th

is p

roje

ct is

par

tial

ly f

un

de

d b

y a

gra

nt

fro

m t

he

Tran

spo

rtat

ion

an

d G

row

th M

anag

em

en

t (T

GM

) P

rog

ram

, a

join

t p

rog

ram

of

the

Ore

go

n D

ep

artm

en

t o

f Tr

ansp

ort

atio

n a

nd

th

e O

reg

on

De

par

tme

nt

of

Lan

d C

on

serv

atio

n a

nd

D

eve

lop

me

nt.

Th

is T

GM

gra

nt

is fi

nan

ced

, in

par

t, b

y fe

de

ral M

ovi

ng

Ah

ead

fo

r P

rog

ress

in t

he

21s

t C

en

tury

(M

AP

-2

1), l

oca

l go

vern

me

nt,

an

d t

he

Sta

te o

f O

reg

on

fu

nd

s.

Th

e co

nte

nts

of

this

do

cum

en

t d

o n

ot

ne

cess

arily

re

fl e

ct v

iew

s o

r p

olic

ies

of

the

Sta

te o

f O

reg

on

.

Page 6: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

Was

hingt

on Co

unty

, Ore

gon |

170t

h-Me

rlo Co

rrido

r Con

cept

Plan

CONT

ENTS

APPE

NDICE

S

Intr

od

uct

ion

2

01P

roje

ct P

urp

ose

an

d C

on

text

3

02P

lan

nin

g P

roce

ss8

03P

rop

ose

d C

on

cep

tual

Des

ign

23

04O

ther

Des

ign

Op

tio

ns

for

Co

nsi

der

atio

n27

1

AE

xist

ing

Co

nd

itio

ns

Rep

ort

BC

on

nec

tivi

ty R

epo

rt

CW

ater

Qu

alit

y an

d D

eten

tio

n R

epo

rt

DS

olu

tio

n A

lter

nat

ives

Mem

ora

nd

um

EP

AC

an

d P

ub

lic W

ork

sho

p #

1 S

um

mar

y

FC

om

mu

nit

y O

utr

each

Su

mm

ary

Rep

ort

GTr

ansp

ort

atio

n A

nal

ysis

Mem

ora

nd

um

HA

lter

nat

e R

ou

nd

abo

ut

Alig

nm

ent

IS

egm

ent

2 P

lan

nin

g L

evel

Co

st E

stim

ate

Page 7: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

INT

RO

DU

CT

ION

2W

ashin

gton

Coun

ty, O

rego

n

As

Was

hin

gto

n C

ou

nty

’s u

rban

are

a d

eve

lop

s an

d u

rban

izes

, th

e C

ou

nty

h

as c

on

tin

ual

ly s

ou

gh

t to

se

rve

the

tran

spo

rtat

ion

ne

ed

s o

f it

s re

sid

en

ts,

wo

rke

rs, a

nd

vis

ito

rs. W

ash

ing

ton

Co

un

ty id

en

tifi

ed

th

e S

W 1

70th

A

ven

ue

/ S

W M

erl

o R

oad

co

rrid

or

as a

n a

rea

of

ne

ed

ed

imp

rove

me

nt

in

ord

er

to b

ette

r se

rve

its

div

ers

ity

of

use

rs. T

he

SW

170

th A

ven

ue

/ S

W

Me

rlo

Ro

ad C

on

cep

tual

Des

ign

Pla

n p

roje

ct h

as d

eve

lop

ed

a c

on

cep

tual

d

esig

n f

or

thes

e tw

o c

on

ne

ctin

g a

rte

rial

ro

adw

ays,

bas

ed

on

: •

An

an

alys

is o

f ex

isti

ng

co

nd

itio

ns,

op

po

rtu

nit

ies

and

co

nst

rain

ts;

• A

bro

ade

r lo

ok

at s

urr

ou

nd

ing

nei

gh

bo

rho

od

co

nte

xt;

• A

n e

valu

atio

n o

f b

est

pra

ctic

es a

nd

inn

ova

tive

des

ign

s; a

nd

• A

n in

clu

sive

pu

blic

invo

lve

me

nt

pro

cess

. T

his

co

nce

ptu

al d

esig

n p

rovi

des

Was

hin

gto

n C

ou

nty

an

d c

orr

ido

r st

ake

ho

lde

rs w

ith

a h

igh

er

leve

l of

cert

ain

ty a

s to

ho

w t

he

corr

ido

r w

ill lo

ok

and

fu

nct

ion

in t

he

futu

re a

nd

pre

par

es t

he

Co

un

ty f

or

the

up

com

ing

ph

ases

of

des

ign

ing

, en

gin

ee

rin

g a

nd

co

nst

ruct

ing

im

pro

vem

en

ts in

th

e co

rrid

or.

Th

is r

ep

ort

pre

sen

ts t

he

pro

ject

pu

rpo

se a

nd

bac

kgro

un

d, t

he

pla

nn

ing

p

roce

ss, t

he

pre

ferr

ed

des

ign

incl

ud

ing

a c

ost

est

imat

e fo

r a

po

ten

tial

fi

rst

ph

ase

alo

ng

170

th A

ven

ue

fro

m M

erl

o R

oad

to

Ale

xan

de

r S

tre

et,

and

des

ign

op

tio

ns

that

may

be

con

sid

ere

d d

uri

ng

th

e d

esig

n p

has

es.

Th

e p

refe

rre

d d

esig

n is

su

bje

ct t

o r

efi

ne

me

nt

and

mo

difi

cati

on

wh

en

th

e p

roje

ct is

fu

nd

ed

an

d m

ove

s in

to m

ore

det

aile

d d

esig

n a

nd

en

gin

ee

rin

g

ph

ases

.

INTR

ODUC

TION

170th

Aven

ue ne

ar Tu

alatin

Hills

Nat

ure P

ark.

Front

age i

mpr

ovem

ents

on 17

0th A

venu

e sou

th of

MAX

cros

sing.

Heav

y veh

icle o

n 170

th Av

enue

.Cr

ossw

alk at

170t

h Ave

nue/

Base

line R

oad i

nter

secti

on.

Page 8: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

11170

th-M

erlo

Corri

dor C

once

pt Pl

an

Tual

atin

Hill

s N

atu

re P

ark

: C

urr

en

tly

the

par

k h

as m

any

old

tre

es g

row

ing

ad

jace

nt

to t

he

pro

pe

rty

line

, wit

h b

ran

ches

ove

rhan

gin

g t

he

sid

e o

f th

e ro

ad (

on

se

gm

en

t 2)

, cr

eati

ng

an

ap

pea

ling

aes

thet

ic, w

hic

h m

ay m

ake

it d

iffi

cult

to

wid

en

th

e ro

adw

ay t

o in

clu

de

the

faci

litie

s d

esig

nat

ed

in t

he

Tran

spo

rtat

ion

S

yste

m P

lan

. Als

o, t

he

par

k is

bo

un

de

d b

y a

tall

fen

ce, w

ith

on

ly t

wo

e

ntr

ance

s o

n t

he

wes

tern

sid

e o

f th

e p

ark,

an

d n

o m

arke

d c

ross

ing

ar

eas

to a

cces

s th

e p

ark

fro

m n

eig

hb

orh

oo

ds

to t

he

wes

t, d

ecr

easi

ng

it

s ac

cess

ibili

ty t

o t

he

resi

de

nts

. Ho

wev

er,

a re

des

ign

of

the

wal

kin

g

and

bic

yclin

g f

acili

ties

alo

ng

th

e st

ud

y co

rrid

or

has

th

e p

ote

nti

al

to s

ub

stan

tial

ly e

nh

ance

co

mm

un

ity

acce

ss t

o t

he

par

k, a

lrea

dy

an

imm

en

se a

sset

in t

he

com

mu

nit

y.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

do

es n

ot

req

uir

e ri

gh

t-o

f-w

ay a

cqu

isit

ion

fro

m

Tual

atin

Hill

s P

ark

and

Re

crea

tio

n D

istr

ict

(TH

PR

D);

ho

wev

er,

the

nat

ura

l fe

atu

res

of

the

par

k cu

rre

ntl

y ex

ten

d in

to t

he

Co

un

ty’s

rig

ht-

of-

way

. It

is

anti

cip

ate

d t

hat

so

me

tre

es w

ill b

e im

pac

ted

by

the

road

way

wid

en

ing

.

Th

e co

nce

ptu

al p

lan

pro

vid

es c

om

ple

te p

ed

estr

ian

an

d b

icyc

le f

acili

ties

as

we

ll as

po

ten

tial

cro

ssin

g lo

cati

on

s th

at w

ill in

crea

se e

ase

of

acce

ss t

o

the

par

k.

On

-str

ee

t b

icyc

le a

nd

pe

de

stri

an f

acili

ty c

on

ne

ctio

ns

wit

hre

gio

nal

tra

il n

etw

ork

: T

he

stu

dy

area

is s

urr

ou

nd

ed

by

Was

hin

gto

n C

ou

nty

’s e

xist

ing

an

d

pla

nn

ed

net

wo

rk o

f p

ave

d m

ult

i-u

se t

rails

, in

clu

din

g t

he

Wat

erh

ou

se

Trai

l, V

ine

Map

le T

rail,

Bea

vert

on

Cre

ek

Trai

l, an

d W

ests

ide

Trai

l. T

he

red

esig

n o

f th

e st

ud

y co

rrid

or

pre

sen

ts a

n o

pp

ort

un

ity

to p

rovi

de

add

ed

co

nn

ect

ivit

y to

th

ese

trai

ls a

nd

en

han

ce a

cces

s to

ad

jace

nt

lan

d u

ses

thro

ug

h p

rote

cte

d o

n-s

tre

et b

icyc

le a

nd

pe

des

tria

n f

acili

ties

.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e b

icyc

le a

nd

pe

des

tria

n f

acili

ties

in t

he

con

cep

tual

pla

n a

re d

esig

ne

d

to o

ffe

r th

e le

vel o

f co

mfo

rt a

nd

pro

tect

ion

th

at w

ill w

elc

om

e u

sers

of

vary

ing

leve

ls, s

imila

r to

th

e m

ult

i-u

se t

rail

net

wo

rk t

hat

su

rro

un

ds

the

stu

dy

area

. Th

e fa

cilit

ies

pro

po

sed

on

170

th A

ven

ue

and

Me

rlo

Ro

ad w

ill

add

co

nn

ect

ivit

y to

th

is n

etw

ork

.

SW

170

th A

ven

ue/

SW

Me

rlo

Ro

ad I

nte

rse

ctio

n:

Th

e S

W 1

70th

Ave

nu

e/S

W M

erl

o R

oad

inte

rse

ctio

n r

ep

rese

nts

a f

utu

re

chal

len

ge

and

an

op

po

rtu

nit

y. E

xist

ing

an

d f

ore

cast

ve

hic

ula

r tr

affi

c p

atte

rns

and

pla

ns

ind

icat

e th

at t

he

seg

me

nt

2 an

d s

eg

me

nt

3 p

ort

ion

s o

f th

e st

ud

y co

rrid

or

will

car

ry m

uch

of

the

no

rth

/so

uth

de

man

d. I

n

add

itio

n, p

ed

estr

ian

an

d b

icyc

list

de

man

d is

like

ly t

o in

crea

se m

ovi

ng

th

rou

gh

th

e in

ters

ect

ion

in a

ll d

ire

ctio

ns,

esp

eci

ally

co

nsi

de

rin

g t

he

incr

easi

ng

leve

ls o

f d

eve

lop

me

nt

in t

he

vici

nit

y. T

he

170

th A

ven

ue/

Me

rlo

R

oad

inte

rse

ctio

n w

ill n

ee

d t

o b

e th

ou

gh

tfu

lly d

esig

ne

d t

o p

rovi

de

en

han

ced

saf

ety

and

co

mfo

rtab

le m

ove

me

nt

of

all m

od

es t

hro

ug

h t

he

inte

rse

ctio

n. T

he

inte

rse

ctio

n p

rese

nts

th

e o

pp

ort

un

ity

to c

on

sid

er

inn

ova

tive

bic

ycle

cro

ssin

g t

reat

me

nts

, a r

ou

nd

abo

ut,

or

oth

er

po

ten

tial

d

esig

n id

eas.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

incl

ud

es t

wo

po

ten

tial

fu

ture

inte

rse

ctio

n d

esig

ns.

T

he

pre

ferr

ed

des

ign

is a

ro

un

dab

ou

t at

th

e 17

0th

Ave

nu

e/M

erl

o R

oad

in

ters

ect

ion

, des

ign

ed

wit

h f

ull

mu

lti-

mo

dal

fac

iliti

es. A

n a

lte

rnat

e in

ters

ect

ion

des

ign

is a

lso

incl

ud

ed

fo

r a

sig

nal

ize

d in

ters

ect

ion

at

170

th A

ven

ue/

Me

rlo

Ro

ad t

hat

incl

ud

es in

no

vati

ve t

reat

me

nts

fo

r th

e m

ove

me

nt

of

bic

yclis

ts.

Exist

ing in

form

al pe

destr

ian pa

th on

170t

h Ave

nue n

ear T

ualat

in Hi

lls N

atur

e Par

k.Dr

aft P

edes

trian

Map

from

Tran

spor

tatio

n Sys

tem

Plan

Pe

destr

ian cr

ossin

gs at

170t

h Ave

nue/

Merlo

Road

Page 9: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

01P

RO

JEC

T P

UR

PO

SE

AN

D C

ON

TE

XT

12W

ashin

gton

Coun

ty, O

rego

n

Dev

elo

pm

en

t o

f S

olu

tio

n A

lte

rnat

ive

s

Dra

win

g o

n t

his

kn

ow

led

ge

, th

e p

roje

ct t

eam

dev

elo

pe

d a

set

of

po

ssib

le s

olu

tio

ns

for

des

ign

of

the

mu

lti-

mo

dal

tra

nsp

ort

atio

n

faci

litie

s in

th

e co

rrid

or.

Eac

h o

f th

e p

oss

ible

so

luti

on

s re

lied

on

th

e Tr

ansp

ort

atio

n S

yste

m P

lan

des

ign

atio

ns

for

fun

ctio

nal

cla

ssifi

cati

on

an

d n

um

be

r o

f la

nes

. Th

ere

fore

, all

of

the

po

ten

tial

so

luti

on

s as

sum

ed

o

ne

veh

icle

tra

vel l

ane

in e

ach

dir

ect

ion

alo

ng

wit

h a

ce

nte

r tu

rn la

ne

for

the

no

rth

ern

se

gm

en

t o

f 17

0th

Ave

nu

e, a

nd

eac

h a

ssu

me

d t

wo

ve

hic

le

trav

el l

anes

in e

ach

dir

ect

ion

(an

d a

ce

nte

r tu

rn la

ne

or

me

dia

n) f

or

the

sou

the

rn s

eg

me

nt

of

170

th A

ven

ue

and

Me

rlo

Ro

ad.

Th

e p

rim

ary

dif

fere

nce

bet

we

en

th

e th

ree

po

ten

tial

so

luti

on

s is

in

ho

w t

hey

pro

vid

e fa

cilit

ies

for

bic

yclis

ts a

nd

pe

des

tria

ns.

Was

hin

gto

n

Co

un

ty a

nd

oth

er

juri

sdic

tio

ns

wit

hin

th

e P

ort

lan

d m

etro

po

litan

re

gio

n

hav

e re

lati

vely

hig

h le

vels

of

wal

kin

g a

nd

bic

yclin

g c

om

par

ed

to

oth

er

reg

ion

s in

th

e U

nit

ed

Sta

tes,

an

d t

his

re

gio

n h

as b

ee

n a

t th

e fo

refr

on

t o

f p

rovi

din

g in

no

vati

ve f

acili

ties

th

at a

llow

saf

e an

d c

om

fort

able

tra

vel f

or

thes

e m

od

es. W

ash

ing

ton

Co

un

ty h

as a

Bic

ycle

Fac

ility

Des

ign

To

olk

it

that

pro

vid

es g

uid

ance

on

bic

ycle

fac

ility

typ

es f

or

dif

fere

nt

con

text

, an

d t

he

pro

ject

tea

m d

rew

on

th

is g

uid

e an

d o

the

rs in

co

nsi

de

rin

g

des

ign

so

luti

on

s fo

r th

e 17

0th

Ave

nu

e an

d M

erl

o R

oad

co

rrid

ors

. A

nu

mb

er

of

po

ten

tial

des

ign

so

luti

on

s fo

r p

ed

estr

ian

an

d b

icyc

le f

acili

ties

ar

e sh

ow

n in

th

e fo

llow

ing

pag

es:

Oth

er

trea

tme

nts

co

nsi

de

red

, su

ch a

s cr

oss

ing

tre

atm

en

ts, t

ran

sit

sto

p

trea

tmen

ts, a

nd

gre

en s

tree

ts/s

torm

wat

er t

reat

men

ts, a

re o

utl

ined

in

Ap

pe

nd

ix D

th

e S

olu

tio

n A

lter

nat

ives

Mem

ora

nd

um

. Th

e th

ree

solu

tio

n

alte

rnat

ives

are

sh

ow

n in

th

e fo

llow

ing

pag

es.

Fac

iliti

es

Se

rvin

g P

ed

est

rian

s

Stand

ard S

idew

alkMu

lti-U

se Tr

ail

Inte

rim Sh

ould

erW

ider

Side

walk

Sta

nd

ard

Sid

ewal

k (5

fe

et)

S

idew

alks

are

th

e fu

nd

ame

nta

l bu

ildin

g b

lock

en

ablin

g c

om

fort

able

, co

nve

nie

nt

and

saf

e w

alki

ng

acc

ess

fro

m p

lace

to

pla

ce. T

hey

als

o

pro

vid

e an

imp

ort

ant

mea

ns

of

mo

bili

ty f

or

pe

op

le w

ith

dis

abili

ties

, fa

mili

es w

ith

str

olle

rs, a

nd

oth

ers

wh

o m

ay n

ot

be

able

to

tra

vel o

n

an u

nim

pro

ved

ro

adsi

de

surf

ace

. An

un

ob

stru

cte

d fi

ve

-fo

ot

sid

ewal

k p

rovi

des

th

e m

inim

um

wid

th n

ece

ssar

y to

pro

vid

e th

is f

un

ctio

nal

ity.

Wid

er

Sid

ewal

k (6

-20

fe

et)

Alr

ead

y in

use

alo

ng

par

ts o

f th

e co

rrid

or,

a w

ide

r si

dew

alk

allo

ws

for

com

fort

able

sid

e-b

y-si

de

wal

kin

g, w

ou

ld a

llow

tw

o p

eo

ple

in

wh

ee

lch

airs

to

pas

s ea

ch o

the

r, an

d p

rovi

des

sp

ace

for

oth

er

ele

me

nts

to

en

han

ce t

he

pe

des

tria

n r

eal

m, s

uch

as

stre

et f

urn

itu

re, s

ign

age

, art

in

stal

lati

on

s, b

uild

ing

fro

nta

ge

ele

me

nts

, an

d b

icyc

le p

arki

ng

. Wid

er

sid

ewal

ks a

re p

arti

cula

rly

app

rop

riat

e in

are

as o

f h

igh

pe

des

tria

n t

raffi

c,

com

me

rcia

l, o

r m

ixe

d u

se a

reas

.

Mu

lti-

Use

Tra

ilIn

so

me

loca

tio

ns,

a p

ave

d, b

i-d

ire

ctio

nal

mu

lti-

use

tra

il ca

n s

erv

e b

oth

p

ed

estr

ian

s an

d b

icyc

lists

fo

r a

low

er

cost

an

d u

sin

g le

ss r

igh

t-o

f-w

ay. A

m

inim

um

wid

th o

f 10

fe

et is

re

com

me

nd

ed

fo

r lo

w-p

ed

estr

ian

/bic

ycle

-tr

affi

c co

nte

xts;

12

feet

or

gre

ate

r sh

ou

ld b

e co

nsi

de

red

in a

reas

wit

h

mo

de

rate

to

hig

h le

vels

of

bic

ycle

an

d p

ed

estr

ian

tra

ffi c

du

e to

th

e p

ote

nti

al f

or

con

fl ic

ts b

etw

ee

n t

hes

e m

od

es. I

n t

hes

e ca

ses,

pav

em

en

t m

arki

ng

s ca

n b

e u

sed

to

se

par

ate

trai

l use

rs.

Inte

rim

Sh

ou

lde

r (6

fe

et)

A p

ave

d 6

-fo

ot

sho

uld

er

is o

fte

n u

sed

in r

ura

l are

as t

o p

rovi

de

a sp

ace

for

pe

des

tria

ns

and

bic

yclis

ts. I

n W

ash

ing

ton

Co

un

ty, d

esig

n s

tan

dar

ds

spe

cify

th

at a

6-f

oo

t sh

ou

lde

r is

ap

pro

pri

ate

as a

n in

teri

m t

reat

me

nt

on

u

rban

str

eet

s p

rio

r to

fu

ll co

nst

ruct

ion

of

the

road

way

.

Page 10: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

13170

th-M

erlo

Corri

dor C

once

pt Pl

an

Fac

iliti

es

Se

rvin

g B

icyc

lists

Stand

ard B

icycle

Lane

Buff e

red B

icycle

Lane

Two-

Way

Cycle

Trac

k

One-

Way

Cycle

Trac

k

Inte

rim Sh

ould

er

Multi

-Use

Trail

Sta

nd

ard

bic

ycle

lan

e (

6 f

ee

t)B

icyc

le la

nes

are

on

-str

eet

fac

iliti

es t

hat

pro

vid

e d

esig

nat

ed

sp

aces

fo

r b

icyc

les,

se

par

ate

d f

rom

ve

hic

les

by

pav

em

en

t m

arki

ng

s. B

icyc

le la

nes

ar

e g

en

era

lly u

sed

on

co

llect

or

and

art

eri

al s

tre

ets

wit

h v

eh

icu

lar

trav

el

volu

mes

an

d s

pe

ed

s th

at m

ake

it d

iffi

cult

fo

r d

rive

rs a

nd

bic

yclis

ts t

o

shar

e th

e ro

ad. A

bic

ycle

lan

e ca

n c

on

sist

of

8-i

nch

wh

ite

stri

pin

g w

ith

a

bic

ycle

sym

bo

l, an

d it

can

be

fi lle

d w

ith

a s

olid

pai

nt

colo

r, ty

pic

ally

g

ree

n t

o e

mp

has

ize

con

fl ic

t zo

nes

.

Bu

ffe

red

Bic

ycle

Lan

eB

uff

ere

d b

icyc

le la

nes

are

on

-str

eet

lan

es t

hat

incl

ud

e an

ad

dit

ion

al

stri

pe

d w

idth

of

typ

ical

ly 2

-3 f

eet

(“b

uff

er”

) b

etw

ee

n t

he

bic

ycle

lan

e an

d t

he

veh

icle

tra

vel l

ane

and

/or

the

veh

icle

par

kin

g la

ne

. Bu

ffe

red

b

icyc

le la

nes

can

be

par

ticu

larl

y ap

pro

pri

ate

on

str

eet

s w

ith

hig

h v

eh

icle

sp

ee

ds,

hig

h v

eh

icle

vo

lum

es, o

r re

lati

vely

fre

qu

en

t p

arki

ng

tu

rno

ver.

A b

uff

er

bet

we

en

par

kin

g a

nd

th

e b

icyc

le la

ne

can

he

lp d

ecr

ease

th

e ri

sk o

f b

icyc

lists

bei

ng

“d

oo

red

” w

he

n d

rive

rs o

pe

n t

hei

r d

oo

rs t

o e

xit

par

ked

ve

hic

les.

On

e-w

ay C

ycle

Tra

cks

Cyc

le t

rack

s, a

lso

kn

ow

n a

s se

par

ate

d b

icyc

le la

nes

or

pro

tect

ed

bic

ycle

la

nes

, are

exc

lusi

ve b

ikew

ays

loca

ted

wit

hin

or

dir

ect

ly a

dja

cen

t to

th

e ro

adw

ay, b

ut

phy

sica

lly s

ep

arat

ed

fro

m m

oto

r ve

hic

le t

raffi

c, p

arki

ng

la

nes

an

d s

idew

alks

. Phy

sica

l se

par

atio

n c

an b

e p

rovi

de

d b

y a

vari

ety

of

des

ign

ele

me

nts

, in

clu

din

g p

arke

d c

ars,

bo

llard

s, c

urb

s, s

urf

ace

mo

un

ted

tu

bu

lar

mar

kers

, or

pla

nte

rs. C

ycle

tra

cks

can

be

con

stru

cte

d

at s

tre

et-l

eve

l, si

dew

alk-

leve

l, o

r b

etw

ee

n t

he

two

.

Two

-way

Cyc

le T

rack

Two

-way

cyc

le t

rack

s, s

imila

r to

on

e-w

ay c

ycle

tra

cks,

are

als

o p

hysi

cally

se

par

ate

d f

rom

ve

hic

le la

nes

, par

kin

g la

nes

, an

d s

idew

alks

. Ho

wev

er,

they

car

ry b

i-d

ire

ctio

nal

bic

ycle

tra

vel,

and

th

ere

fore

are

ge

ne

rally

in

stal

led

on

on

ly o

ne

sid

e o

f th

e ro

adw

ay. T

wo

-way

cyc

le t

rack

s ar

e ap

plic

able

in s

itu

atio

ns

wh

en

rig

ht-

of-

way

is li

mit

ed

, dri

vew

ays

and

ac

cess

es a

re in

fre

qu

en

t, a

nd

/or

wh

en

co

nn

ect

ing

to

an

off

-str

eet

mu

lti-

use

tra

il.

Mu

lti-

Use

Tra

ilIn

so

me

loca

tio

ns,

a p

ave

d, b

i-d

ire

ctio

nal

mu

lti-

use

tra

il ca

n s

erv

e b

oth

p

ed

estr

ian

s an

d b

icyc

lists

fo

r a

low

er

cost

an

d u

sin

g le

ss r

igh

t-o

f-w

ay. A

m

inim

um

wid

th o

f 10

fe

et is

re

com

me

nd

ed

fo

r lo

w-p

ed

estr

ian

/bic

ycle

-tr

affi

c co

nte

xts;

12

feet

or

gre

ate

r sh

ou

ld b

e co

nsi

de

red

in a

reas

wit

h

mo

de

rate

to

hig

h le

vels

of

bic

ycle

an

d p

ed

estr

ian

tra

ffi c

du

e to

th

e p

ote

nti

al f

or

con

fl ic

ts b

etw

ee

n t

hes

e m

od

es. I

n t

hes

e ca

ses,

pav

em

en

t m

arki

ng

s ca

n b

e u

sed

to

se

par

ate

trai

l use

rs.

Inte

rim

Sh

ou

lde

r (6

fe

et)

A p

ave

d 6

-fo

ot

sho

uld

er

is o

fte

n u

sed

in r

ura

l are

as t

o p

rovi

de

a sp

ace

for

pe

des

tria

ns

and

bic

yclis

ts. I

n W

ash

ing

ton

Co

un

ty, d

esig

n s

tan

dar

ds

spe

cify

th

at a

6-f

oo

t sh

ou

lde

r is

ap

pro

pri

ate

as a

n in

teri

m t

reat

me

nt

on

u

rban

str

eet

s p

rio

r to

fu

ll co

nst

ruct

ion

of

the

road

way

.

Page 11: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

14W

ashin

gton

Coun

ty, O

rego

n

A

C

B

SEGM

ENT 1

- AL

TERN

ATIVE

1A B

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SB

icyc

le L

ane

or

Bu

ffe

red

Bic

ycle

Lan

e

Mu

lti-

Use

Pat

h

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

- AL

TERN

ATIVE

1

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

ALTE

RNAT

IVE 1:

Mult

i-Use

Trail

Syste

m

CC

SEGM

ENT 3

- AL

TERN

ATIVE

1

Alt

ern

ativ

e 1

is f

ocu

sed

on

bu

ildin

g a

nd

co

nn

ect

ing

th

e m

ult

i-u

se

pat

h n

etw

ork

to

se

rve

bic

ycle

an

d p

ed

estr

ian

ne

ed

s. T

his

alt

ern

ativ

e in

clu

des

mu

lti-

use

pat

hs

on

bo

th s

ides

of

seg

me

nt

3 (

Me

rlo

Ro

ad),

e

nab

ling

pe

des

tria

ns

and

bic

yclis

ts t

o c

ho

ose

th

e si

de

of

the

road

th

at b

est

con

ne

cts

thei

r tr

ip b

ase

d o

n t

hei

r o

rig

in a

nd

des

tin

atio

n.

Th

e p

ath

on

th

e so

uth

sid

e o

f M

erl

o R

oad

wo

uld

min

imiz

e cr

oss

ing

s fo

r p

eo

ple

tra

velin

g o

n 1

58

th A

ven

ue

/ M

erl

o R

oad

/ 1

70th

Ave

nu

e.

Lik

ewis

e, u

sers

wo

uld

be

able

to

eas

ily c

on

ne

ct t

hei

r tr

ip f

rom

th

e W

ate

rho

use

Tra

il to

th

e p

lan

ne

d B

eave

rto

n C

ree

k Tr

ail u

sin

g t

he

mu

lti-

use

pat

h o

n t

he

no

rth

sid

e o

f M

erl

o R

oad

. Th

is o

pti

on

tak

es

adva

nta

ge

of

the

exis

tin

g c

ross

ing

loca

tio

n a

t th

e 15

8th

Ave

nu

e M

AX

sta

tio

n t

o c

on

ne

ct t

he

mu

lti-

use

pat

hs,

an

d p

rovi

des

a h

igh

le

vel o

f se

par

atio

n f

or

bic

yclis

ts o

f va

rio

us

leve

ls. O

n s

eg

me

nt

2,

Alt

ern

ativ

e 1

incl

ud

es a

mu

lti-

use

pat

h c

on

ne

ctio

n o

n t

he

east

sid

e o

f th

e ro

adw

ay a

s w

ell

as s

tan

dar

d o

r b

uff

ere

d o

n-s

tre

et b

icyc

le

lan

es t

o s

erv

e b

icyc

lists

mo

re c

om

fort

able

rid

ing

ad

jace

nt

to

mo

tor

veh

icle

tra

ffi c

. Se

gm

en

t 1

incl

ud

es o

n-s

tre

et b

icyc

le la

nes

. A

lte

rnat

ive

1 w

ou

ld r

eq

uir

e a

mu

lti-

use

pat

h c

ross

ing

at

170

th

Ave

nu

e/A

ug

ust

a L

ane

to c

on

ne

ct t

o t

he

Bea

vert

on

Cre

ek

Trai

l an

d

cro

ssin

gs

of

the

no

rth

an

d w

est

leg

s o

f th

e 17

0th

Ave

nu

e/M

erl

o

Ro

ad in

ters

ect

ion

.

1

3

2

Page 12: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

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NN

ING

PR

OC

ES

S

15170

th-M

erlo

Corri

dor C

once

pt Pl

an

SEGM

ENT 1

- AL

TERN

ATIVE

2

ALTE

RNAT

IVE 2:

One

-Way

Cycle

Trac

ks Al

ong B

oth S

ides

A B

A

B

B

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SO

ne

-way

Cyc

le T

rack

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

/3 -

ALTE

RNAT

IVE 2

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g m

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Alt

ern

ativ

e 2

pro

vid

es o

ne

-way

cyc

le t

rack

s an

d s

idew

alks

on

bo

th

sid

es a

lon

g e

ach

of

the

corr

ido

r se

gm

en

ts. T

he

full

sep

arat

ion

of

faci

litie

s (b

etw

ee

n m

oto

rize

d v

eh

icle

s, b

icyc

les,

an

d p

ed

estr

ian

s)

pro

vid

es e

ach

use

r ty

pe

wit

h c

lear

de

dic

ate

d s

pac

e. D

ep

en

din

g

on

th

e ty

pe

of

sep

arat

ion

fro

m m

oto

r ve

hic

le t

raffi

c, o

ne

-way

cy

cle

trac

ks c

an p

rovi

de

a le

vel o

f co

mfo

rt t

hat

att

ract

s a

wid

e ra

ng

e o

f b

icyc

le u

sers

. Th

is a

lte

rnat

ive

pro

vid

es b

icyc

le o

pe

rati

on

si

mila

r to

sta

nd

ard

bic

ycle

lan

es, a

nd

res

ult

s in

a c

on

fi g

ura

tio

n t

hat

m

eet

s d

rive

r an

d b

icyc

list

exp

ect

atio

n. I

n t

he

on

e-w

ay c

ycle

tra

ck

con

fi g

ura

tio

n, t

he

170

th A

ven

ue/

Me

rlo

Ro

ad in

ters

ect

ion

co

uld

in

clu

de

two

-sta

ge

left

-tu

rn b

icyc

le b

oxe

s to

fac

ilita

te b

icyc

le le

ft-

turn

mo

vem

en

ts. T

he

Me

rlo

Ro

ad/J

en

kin

s R

oad

inte

rse

ctio

n w

ou

ld

ne

ed

to

be

des

ign

ed

to

allo

w s

ou

thb

ou

nd

bic

yclis

ts o

n t

he

Wes

tsid

e Tr

ail (

on

th

e ea

st s

ide

of

158

th A

ven

ue)

to

cro

ss o

ver

to t

he

trai

l, o

r so

uth

bo

un

d c

ycle

tra

ck, o

n t

he

wes

t an

d n

ort

h s

ide

of

Me

rlo

Ro

ad.

Alt

ern

ativ

e 2

wo

uld

als

o r

eq

uir

e th

e d

esig

n o

f a

cro

ssin

g o

r le

ft t

urn

tr

eatm

en

t at

170

th A

ven

ue/

Au

gu

sta

Lan

e fo

r n

ort

hb

ou

nd

bic

yclis

ts

to c

on

ne

ct t

o t

he

futu

re B

eave

rto

n C

ree

k Tr

ail.

1

3

2

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02P

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ING

PR

OC

ES

S

16W

ashin

gton

Coun

ty, O

rego

n

170th

SEGM

ENT 1

- AL

TERN

ATIVE

3

ALTE

RNAT

IVE 3:

Two-

Way

Cycle

Trac

ks

A B

A

B

B

170th

SEGM

ENT 2

/3 -

ALTE

RNAT

IVE 3

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SB

icyc

le L

ane

or

Bu

ffe

red

Bic

ycle

Lan

e

Two

-Way

Cyc

le T

rack

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Alt

ern

ativ

e 3

pro

po

ses

two

-way

cyc

le t

rack

s an

d s

idew

alks

to

co

nn

ect

th

e p

lan

ne

d a

nd

exi

stin

g m

ult

i-u

se p

ath

net

wo

rk. 1

70th

A

ven

ue

sou

th o

f M

erl

o R

oad

(se

gm

en

t 2)

has

a t

wo

-way

cyc

le

trac

k o

n it

s ea

st s

ide

adja

cen

t to

th

e Tu

alat

in H

ills

Nat

ure

Par

k.

Th

is c

ycle

tra

ck c

on

ne

cts

wit

h a

no

the

r tw

o-w

ay c

ycle

tra

ck o

n

the

sou

th s

ide

of

Me

rlo

Ro

ad, w

hic

h p

rovi

des

co

nn

ect

ion

s to

th

e W

ests

ide

and

Wat

erh

ou

se T

rails

. Th

is t

wo

-way

cyc

le t

rack

wo

uld

p

rovi

de

a p

rote

cte

d o

n-s

tre

et c

on

ne

ctio

n f

or

the

Wes

tsid

e Tr

ail

that

wo

uld

allo

w u

sers

to

avo

id c

ross

ing

th

e M

erl

o R

oad

/15

8th

A

ven

ue

inte

rse

ctio

n t

wic

e. A

lte

rnat

ive

3 in

clu

des

sta

nd

ard

or

bu

ffe

red

bic

ycle

lan

es o

n t

he

op

po

site

sid

e o

f th

e ro

adw

ay t

o s

erv

e b

icyc

lists

rid

ing

at

a h

igh

er

spe

ed

an

d w

ho

are

mo

re c

om

fort

able

ri

din

g a

dja

cen

t to

mo

tor

veh

icle

tra

ffi c

. Th

e b

icyc

le-s

pe

cifi

c d

esig

n

ele

me

nts

of

the

170

th A

ven

ue/

Me

rlo

Ro

ad in

ters

ect

ion

will

var

y d

ep

en

din

g o

n t

he

inte

rse

ctio

n c

on

fi g

ura

tio

n s

ele

cte

d, b

ut

cou

ld

incl

ud

e b

icyc

le s

ign

als

or

two

-sta

ge

left

-tu

rn b

icyc

le b

oxe

s. In

ad

dit

ion

, Alt

ern

ativ

e 3

wo

uld

re

qu

ire

a b

icyc

le c

ross

ing

at

the

170

th

Ave

nu

e/A

ug

ust

a L

ane

inte

rse

ctio

n in

ord

er

to p

rovi

de

a co

nn

ect

ion

to

th

e p

lan

ne

d B

eave

rto

n C

ree

k Tr

ail.

1

3

2

Page 14: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

17170

th-M

erlo

Corri

dor C

once

pt Pl

an

Mu

lti-

use

Tra

il S

yste

m (

Alt

ern

ativ

e 1

)O

ne

-way

Cyc

le T

rack

s al

on

g B

oth

Sid

es

(Alt

ern

ativ

e 2

)Tw

o-w

ay C

ycle

Tra

cks

(Alt

ern

ativ

e 3

)

Ad

van

tag

es

• P

rovi

de

s h

igh

leve

l of

con

ne

ctiv

ity

for

exis

tin

g a

nd

pla

nn

ed

m

ult

i-u

se p

ath

sys

tem

in v

icin

ity,

bo

th n

ort

h a

nd

so

uth

of

Me

rlo

R

oad

.•

Pro

vid

es

hig

h le

vel o

f se

par

atio

n b

etw

ee

n b

icyc

les

and

mo

tor

veh

icle

s, w

hic

h c

an a

ttra

ct b

icyc

lists

of

vari

ou

s le

vels

.•

Pro

vid

es

a fa

cilit

y o

n t

he

we

st s

ide

of

170

th A

ven

ue

in f

ron

t o

f B

eav

er

Acr

es

Ele

me

nta

ry S

cho

ol.

• S

ep

arat

e sp

ace

for

eac

h u

ser

typ

e (p

ed

est

rian

, bic

ycle

, mo

tor

veh

icle

), w

hic

h c

an p

rovi

de

a h

igh

leve

l of

com

fort

fo

r a

ran

ge

of

bo

th b

icyc

lists

an

d p

ed

est

rian

s.•

Op

era

tio

nal

ly s

imila

r to

sta

nd

ard

bic

ycle

lan

es,

me

etin

g d

rive

r ex

pe

ctat

ion

s.•

Inte

rse

ctio

n d

esi

gn

can

pro

vid

e o

pti

on

fo

r tw

o-s

tag

e tu

rnin

g

mo

vem

en

ts a

nd

/or

for

“ear

ly e

xit”

of

the

cycl

e tr

ack

to p

osi

tio

n f

or

turn

s.

• O

ffe

rs t

he

po

ten

tial

to

co

nn

ect

pla

nn

ed

an

d e

xist

ing

mu

lti-

use

pat

hs

via

an o

n-s

tre

et p

rote

cte

d t

wo

-way

fac

ility

.•

May

re

qu

ire

less

rig

ht-

of-

way

wid

th t

han

on

e-w

ay c

ycle

tra

cks,

du

e to

th

e n

ee

d f

or

on

ly o

ne

bu

ffe

r b

etw

ee

n t

he

cycl

e tr

ack

and

mo

tor

veh

icle

tra

vel l

ane

s.

Dis

adva

nta

ge

s•

Do

es

no

t p

rovi

de

sep

arat

e d

ed

icat

ed

fac

iliti

es

for

pe

de

stri

ans

and

bic

yclis

ts, b

ut

com

bin

es

the

m o

n m

ult

i-u

se p

ath

s. A

t m

od

era

te-t

o-h

igh

vo

lum

es,

po

ten

tial

co

nfl

icts

an

d d

ela

y fo

r u

sers

may

re

sult

.•

Mo

re c

on

fi d

en

t co

mm

ute

r cy

clis

ts m

ay p

refe

r o

n-s

tre

et f

acili

tie

s,

wh

ere

th

ey c

an t

rave

l at

hig

he

r sp

ee

ds

and

hav

e th

e o

pti

on

to

m

ake

turn

ing

mo

vem

en

ts a

s m

oto

r ve

hic

les

do

(as

op

po

sed

to

a

two

-sta

ge

turn

, wh

ich

intr

od

uce

s m

ore

de

lay)

.

• M

ay r

eq

uir

e th

e m

ost

wid

th, d

ue

to p

rovi

din

g a

bu

ffe

r fr

om

mo

tor

veh

icle

tra

ffi c

on

bo

th s

ides

of

the

road

way

.•

May

be

the

mo

st d

iffi

cult

fac

ility

to

pro

vid

e in

a p

has

ed

im

ple

me

nta

tio

n w

ith

ou

t th

e n

ee

d t

o r

eco

nst

ruct

.

• Tw

o-w

ay c

ycle

tra

cks

req

uir

e o

ne

dir

ect

ion

of

bic

ycle

tra

vel i

n a

d

ire

ctio

n c

ou

nte

r to

mo

tor

veh

icle

tra

ffi c

, wh

ich

mo

tori

sts

may

no

t ex

pe

ct (

at le

ast

init

ially

). I

nte

rse

ctio

n t

urn

ing

mo

vem

en

ts m

ust

be

care

fully

co

ntr

olle

d t

o e

nsu

re s

afe

cro

ssin

gs

for

bo

th d

ire

ctio

ns

of

trav

el.

• A

t tr

ansi

tio

ns

bet

we

en

tw

o-w

ay c

ycle

tra

cks

and

bic

ycle

lan

es,

b

icyc

lists

may

ne

ed

to

mak

e a

two

-sta

ge

or

dia

go

nal

cro

ssin

g o

f an

in

ters

ect

ion

, po

ten

tial

ly in

tro

du

cin

g m

ore

de

lay.

No

rth

170

th

Ave

nu

e(S

eg

me

nt

1)

Co

nsi

de

rati

on

s

A m

ult

i-u

se t

rail

cou

ld b

e co

nsi

de

red

fo

r se

gm

en

t 1,

bu

t is

no

t p

rop

ose

d f

or

seve

ral r

eas

on

s. N

ort

h o

f B

ase

line

, 170

th h

as b

icyc

le

lan

es

on

bo

th s

ide

s o

f th

e ro

ad, s

o t

he

mu

lti-

use

pat

h w

ou

ld n

ee

d

to t

ran

siti

on

. A m

ult

i-u

se p

ath

on

se

gm

en

t 1

wo

uld

no

t su

bst

anti

ally

e

nh

ance

co

nn

ect

ivit

y o

f th

e tr

ails

net

wo

rk. I

nst

ead

, sta

nd

ard

or

bu

ffe

red

bic

ycle

lan

es

are

incl

ud

ed

fo

r se

gm

en

t 1,

wit

h c

ross

ing

tr

eat

me

nts

pro

vid

ed

at

170

th A

ven

ue/

Me

rlo

Ro

ad t

o t

ran

siti

on

fro

m

mu

lti-

use

pat

hs

to t

he

bic

ycle

lan

es.

On

se

gm

en

t 1,

wh

ich

has

low

er

traf

fi c

volu

me

s th

an s

eg

me

nts

2 a

nd

3,

on

e-w

ay c

ycle

tra

cks

cou

ld b

e d

esi

gn

ed

wit

h a

ve

rtic

al s

ep

arat

ion

fro

m

trav

el l

ane

s (a

t a

leve

l bet

we

en

sid

ewal

k an

d r

oad

way

leve

l) t

o p

rovi

de

sep

arat

ion

wit

ho

ut

add

ing

th

e w

idth

of

a h

ori

zon

tal b

uff

er.

A t

wo

-way

cyc

le t

rack

co

uld

be

con

sid

ere

d f

or

seg

me

nt

1, b

ut

is n

ot

pro

po

sed

fo

r se

vera

l re

aso

ns.

No

rth

of

Bas

elin

e, 1

70th

Ave

nu

e h

as

bic

ycle

lan

es

on

bo

th s

ide

s o

f th

e ro

ad, s

o t

he

two

-way

cyc

le t

rack

w

ou

ld n

ee

d t

o t

ran

siti

on

to

fac

iliti

es

on

eac

h s

ide

of

the

road

. A t

wo

-w

ay c

ycle

tra

ck o

n s

eg

me

nt

1 w

ou

ld n

ot

pro

vid

e a

con

ne

ctio

n b

etw

ee

n

exis

tin

g o

r p

lan

ne

d m

ult

i-u

se p

ath

s (a

s it

wo

uld

in s

eg

me

nt

3).

In

ste

ad,

stan

dar

d o

r b

uff

ere

d b

icyc

le la

ne

s ar

e in

clu

de

d f

or

seg

me

nt

1, w

ith

cr

oss

ing

tre

atm

en

ts p

rovi

de

d a

t 17

0th

Ave

nu

e/M

erl

o R

oad

to

tra

nsi

tio

n

fro

m t

he

two

-way

cyc

le t

rack

s to

th

e b

icyc

le la

ne

s.

So

uth

170

th

Ave

nu

e(S

eg

me

nt

2)

Co

nsi

de

rati

on

s

Alt

ern

ativ

e 1

cou

ld a

lso

be

de

sig

ne

d w

ith

th

e m

ult

i-u

se p

ath

on

th

e w

est

sid

e o

f se

gm

en

t 2

, ad

jace

nt

to t

he

resi

de

nti

al n

eig

hb

orh

oo

ds

to

pro

vid

e a

con

ne

ctio

n f

rom

th

e n

eig

hb

orh

oo

ds

to t

he

Be

ave

r C

ree

k E

lem

en

tary

Sch

oo

l wit

ho

ut

cro

ssin

g 1

70th

Ave

nu

e. H

ow

eve

r, a

mu

lti-

use

pat

h o

n t

he

eas

t si

de

wo

uld

intr

od

uce

nu

me

rou

s si

de

-str

eet

cr

oss

ing

s. A

lign

ing

th

e p

ath

on

th

e e

ast

sid

e p

rovi

de

s a

con

ne

ctio

n

to t

he

Tual

atin

Hill

s N

atu

re P

ark

and

has

a li

mit

ed

nu

mb

er

of

sid

e-

stre

et c

ross

ing

s. T

he

add

itio

n o

r o

ne

or

two

sta

nd

ard

bic

ycle

lan

es

cou

ld p

rovi

de

an o

pti

on

fo

r m

ore

co

nfi

de

nt

cycl

ists

se

eki

ng

to

tra

vel

fast

er

than

wo

uld

be

safe

on

a m

ult

i-u

se p

ath

.

On

e-w

ay c

ycle

tra

cks

wo

uld

ne

ed

to

be

de

sig

ne

d t

o p

rovi

de

suffi

cie

nt

op

po

rtu

nit

ies

for

bic

yclis

ts t

o c

ross

170

th A

ven

ue

or

mak

e le

ft t

urn

m

ove

me

nts

(e

.g. t

urn

s in

to t

he

ne

igh

bo

rho

od

s fo

r n

ort

hb

ou

nd

b

icyc

lists

).

Alt

ern

ativ

e 3

co

uld

als

o b

e d

esi

gn

ed

wit

h t

he

two

-way

cyc

le t

rack

on

th

e w

est

sid

e o

f se

gm

en

t 2

, ad

jace

nt

to t

he

resi

de

nti

al n

eig

hb

orh

oo

ds

to p

rovi

de

a co

nn

ect

ion

fro

m t

he

ne

igh

bo

rho

od

s to

th

e B

eav

er

Cre

ek

Ele

me

nta

ry S

cho

ol w

ith

ou

t cr

oss

ing

170

th A

ven

ue

. Ho

wev

er,

a cy

cle

trac

k o

n t

he

we

st s

ide

wo

uld

intr

od

uce

nu

me

rou

s si

de

-str

eet

cro

ssin

gs.

A

lign

ing

th

e cy

cle

trac

k o

n t

he

eas

t si

de

pro

vid

es

a co

nn

ect

ion

to

th

e Tu

alat

in H

ills

Nat

ure

Par

k an

d h

as a

lim

ite

d n

um

be

r o

f si

de

-str

eet

cr

oss

ing

s. T

he

add

itio

n o

r o

ne

or

two

sta

nd

ard

bic

ycle

lan

es

cou

ld

pro

vid

e an

op

tio

n f

or

mo

re c

on

fi d

en

t cy

clis

ts s

ee

kin

g t

o t

rave

l fas

ter

than

wo

uld

be

safe

on

a t

wo

-way

cyc

le t

rack

.

Me

rlo

Ro

ad

(Se

gm

en

t 3

) C

on

sid

era

tio

ns

Se

gm

en

t 3

co

uld

be

con

stru

cte

d w

ith

a m

ult

i-u

se p

ath

on

th

e n

ort

h

sid

e, t

he

sou

th s

ide

, or

on

bo

th s

ide

s. P

ath

s o

n b

oth

sid

es

pro

vid

e th

e h

igh

est

leve

l of

con

ne

ctiv

ity

bet

we

en

oth

er

mu

lti-

use

pat

hs,

b

ut

wo

uld

re

qu

ire

way

-fi n

din

g s

ign

age

to h

elp

new

use

rs fi

nd

th

eir

d

est

inat

ion

s.

In o

rde

r to

pro

vid

e a

hig

h q

ual

ity

con

ne

ctio

n f

or

vari

ou

s le

vels

of

bic

yclis

ts b

etw

ee

n t

he

pla

nn

ed

an

d e

xist

ing

mu

lti-

use

pat

hs,

on

e-

way

cyc

le t

rack

s o

n M

erl

o R

oad

wo

uld

ne

ed

to

be

des

ign

ed

wit

h a

su

bst

anti

al le

vel o

f se

par

atio

n f

rom

mo

tor

veh

icle

tra

ffi c

.

A t

wo

-way

cyc

le t

rack

in s

eg

me

nt

3 c

ou

ld p

rovi

de

a co

nti

nu

ou

s co

nn

ect

ion

bet

we

en

th

e m

ult

i-u

se p

ath

s o

n t

he

eas

t e

nd

of

the

seg

me

nt

and

th

e p

lan

ne

d m

ult

i-u

se p

ath

co

nn

ect

ion

to

th

e w

est

of

170

th A

ven

ue

. T

he

add

itio

n o

f a

stan

dar

d b

icyc

le la

ne

on

th

e o

the

r si

de

of

the

stre

et

wo

uld

allo

w m

ore

co

nfi

de

nt

we

stb

ou

nd

cyc

lists

to

min

imiz

e th

eir

ne

ed

to

cro

ss M

erl

o R

oad

to

acc

ess

th

e fa

cilit

y.

Ph

asin

g

Op

tio

ns

Pro

vid

ing

bic

ycle

fac

iliti

es

on

on

e si

de

of

the

road

way

cre

ate

s p

has

ing

op

tio

ns

in w

hic

h o

ne

sid

e o

f th

e ro

ad c

ou

ld b

e in

itia

lly

con

stru

cte

d, w

ith

tw

o t

rave

l lan

es

add

ed

to

th

e o

the

r si

de

in t

he

ult

imat

e p

has

e.

Wit

h o

ne

-way

cyc

le t

rack

s, p

has

ing

wo

uld

be

mo

re d

iffi

cult

, sin

ce t

he

ult

imat

e lo

cati

on

of

the

faci

litie

s w

ou

ld n

ee

d t

o a

cco

mm

od

ate

the

full

wid

th o

f th

e 5

-lan

e ro

adw

ay b

etw

ee

n t

he

m. I

n a

n in

teri

m p

has

e,

bo

th c

ycle

tra

cks

cou

ld b

e p

rovi

de

d, w

ith

on

e la

ter

rem

ove

d w

he

n t

he

road

way

is w

ide

ne

d; o

r, o

ne

cycl

e tr

ack

cou

ld b

e co

nst

ruct

ed

on

on

e si

de

, wit

h a

n in

teri

m 6

-fo

ot

sho

uld

er

pro

vid

ed

on

th

e o

the

r si

de

.

Pro

vid

ing

bic

ycle

fac

iliti

es

on

on

e si

de

of

the

road

way

cre

ate

s p

has

ing

o

pti

on

s in

wh

ich

on

e si

de

of

the

road

co

uld

be

init

ially

co

nst

ruct

ed

, wit

h

two

tra

vel l

ane

s ad

de

d t

o t

he

oth

er

sid

e in

th

e u

ltim

ate

ph

ase

.

So

luti

on

Alt

ern

ativ

e 1

is f

ocu

sed

on

bu

ildin

g a

nd

co

nn

ect

ing

th

e m

ult

i-u

se p

ath

net

wo

rk, i

ncl

ud

ing

pat

hs

on

bo

th s

ides

of

Me

rlo

R

oad

.

So

luti

on

Alt

ern

ativ

e 2

pro

vid

es o

ne

-way

cyc

le t

rack

s an

d s

idew

alks

o

n b

oth

sid

es o

f th

e ro

adw

ays

thro

ug

ho

ut

the

corr

ido

r.S

olu

tio

n A

lte

rnat

ive

3 u

ses

a co

mb

inat

ion

of

two

-way

cyc

le t

rack

s,

bic

ycle

lan

es, a

nd

sid

ewal

ks.

So

luti

on

Alt

ern

ativ

es

Co

mp

aris

on

Page 15: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

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NN

ING

PR

OC

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18W

ashin

gton

Coun

ty, O

rego

n

Fir

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ou

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etin

gs

and

Pu

blic

Ou

tre

ach

In N

ove

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er

2014

, th

e p

roje

ct t

eam

met

wit

h t

he

PA

C

and

he

ld a

pu

blic

wo

rksh

op

to

get

inp

ut

and

fe

ed

bac

k o

n

the

vari

ou

s fa

cilit

y ty

pes

an

d s

olu

tio

n a

lte

rnat

ives

. PA

C

me

mb

ers

an

d a

tte

nd

ees

of

the

pu

blic

wo

rksh

op

co

nsi

de

red

a

vari

ety

of

bic

ycle

an

d p

ed

estr

ian

fac

ility

typ

es f

or

each

of

the

thre

e co

rrid

or

seg

me

nts

.

Se

gm

en

t 1

(170

th A

ve N

ort

h)S

eg

me

nt

2(1

70th

Ave

So

uth

)S

eg

me

nt

3(M

erl

o R

d)

Pe

de

stri

ans

Sta

nd

ard

Sid

ewal

k1

1

Wid

er S

idew

alk

61

3

Mu

lti-

Use

Tra

il3

73

Inte

rim

Sh

ou

lde

r1

Bic

ycle

s

Sta

nd

ard

Bic

ycle

Lan

e3

11

Bu

ffe

red

Bic

ycle

Lan

e2

22

On

e-w

ay C

ycle

Tra

ck1

01

Two

-way

Cyc

le T

rack

00

0

Mu

lti-

Use

Tra

il3

53

Inte

rim

Sh

ou

lde

r0

00

PA

C M

eet

ing

#1

Fac

ility

Typ

e E

xerc

ise

Re

sult

s

Su

mm

ary

of

Inp

ut

Pe

de

stri

ans

As

sho

wn

in t

he

tab

le (

at r

igh

t), r

esp

on

ses

ind

icat

e st

ron

g

con

sen

sus

that

th

e e

nti

re c

orr

ido

r w

arra

nts

mo

re t

han

st

and

ard

wid

th s

idew

alks

an

d t

hat

se

gm

en

t 2

has

th

e m

ost

n

ee

d f

or

bu

ffe

r fo

r p

ed

estr

ian

s fr

om

th

e ve

hic

le t

rave

l lan

es.

Bic

ycle

s T

he

stro

ng

est

sup

po

rt f

or

mu

lti-

use

tra

ils w

as f

or

app

licat

ion

o

n s

eg

me

nt

2.

Mu

lti-

use

tra

ils h

ad e

qu

al s

up

po

rt t

o b

uff

ere

d b

icyc

le la

nes

an

d o

ne

-way

cyc

le t

rack

s co

mb

ine

d f

or

seg

me

nts

1 a

nd

3,

ind

icat

ing

a s

plit

fo

r th

ese

seg

me

nts

bet

we

en

an

on

-str

eet

o

r o

ff-s

tre

et (

mu

lti-

use

tra

il) f

acili

ty.

Se

gm

en

t 1

was

th

e o

nly

se

gm

en

t w

ith

mo

re t

han

on

e vo

te

for

a st

and

ard

bic

ycle

lan

e, i

nd

icat

ing

th

at s

om

e p

eo

ple

fe

el

stan

dar

d b

icyc

le la

nes

(la

rge

ly e

xist

ing

in t

his

se

gm

en

t) a

re

ade

qu

ate

.

Co

rrid

or

Se

gm

en

ts

1

3

2

Publ

ic W

orks

hop #

1

Page 16: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

19170

th-M

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Corri

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once

pt Pl

an

Publ

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hop #

1

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gm

en

t 1

(170

th A

ve N

ort

h)S

eg

me

nt

2(1

70th

Ave

So

uth

)S

eg

me

nt

3(M

erl

o R

d)

Pe

de

stri

ans

Sta

nd

ard

Sid

ewal

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113

Wid

er S

idew

alk

26

2

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lti-

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Sh

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lde

r1

Bic

ycle

s

Sta

nd

ard

Bic

ycle

Lan

e2

42

Bu

ffe

red

Bic

ycle

Lan

e0

1110

On

e-w

ay C

ycle

Tra

ck3

51

Two

-way

Cyc

le T

rack

12

0

Mu

lti-

Use

Tra

il5

62

Pu

blic

Wo

rksh

op

#1

Fac

ility

Typ

e E

xerc

ise

Re

sult

sS

um

mar

y o

f In

pu

t

Pe

de

stri

ans

As

sho

wn

in t

he

tab

le (

at le

ft),

mo

re v

ote

s w

ere

cas

t fo

r fa

cilit

y ty

pes

in s

eg

me

nt

2 th

an o

the

r se

gm

en

ts. T

his

in

dic

ates

th

at s

om

e p

eo

ple

on

ly v

ote

d f

or

seg

me

nt

2,

wh

ich

may

ind

icat

e it

is t

hei

r m

ain

co

nce

rn in

th

e co

rrid

or.

So

me

par

tici

pan

ts w

ou

ld li

ke t

o h

ave

mu

lti-

use

tra

ils o

n a

ll se

gm

en

ts.

Be

cau

se m

ult

i-u

se t

rail

was

no

t a

stro

ng

pre

fere

nce

fo

r b

icyc

ling

tre

atm

en

ts (

see

be

low

), t

he

pe

des

tria

n r

esu

lts

for

mu

lti-

use

tra

il m

ay in

dic

ate

a d

esir

e fo

r p

ed

estr

ian

s to

hav

e se

par

atio

n f

rom

tra

ffi c

.

Bic

ycle

s M

ore

vo

tes

we

re c

ast

for

faci

lity

typ

es in

se

gm

en

t 2

than

o

the

r se

gm

en

ts. T

his

ind

icat

es t

hat

so

me

par

tici

pan

ts o

nly

vo

ted

fo

r se

gm

en

t 2

, wh

ich

may

ind

icat

e it

is t

hei

r m

ain

co

nce

rn in

th

e co

rrid

or.

Se

gm

en

t 3

res

po

nd

ers

had

a s

tro

ng

pre

fere

nce

fo

r b

uff

ere

d

bic

ycle

lan

es.

Res

po

nse

s o

n s

eg

me

nt

2 a

lso

sh

ow

ed

a

stro

ng

pre

fere

nce

fo

r b

uff

ere

d b

icyc

le la

nes

alo

ng

wit

h

som

e su

pp

ort

fo

r o

ne

-way

cyc

le t

rack

s an

d m

ult

i-u

se t

rails

. T

he

com

bin

atio

n o

f re

spo

nse

s fo

r b

uff

ere

d b

icyc

le la

nes

an

d o

ne

-way

cyc

le t

rack

s sh

ow

s a

stro

ng

pre

fere

nce

fo

r fa

cilit

ies

sep

arat

e fr

om

pe

des

tria

ns

and

no

t se

t-b

ack

fro

m

the

road

way

.

Publ

ic W

orks

hop #

1

Page 17: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

20

Was

hingt

on Co

unty

, Ore

gon

Publ

ic W

orks

hop #

1

Alt

ern

ativ

e 1

(E

xpan

de

d

Mu

lti-

Use

Sys

tem

)

Alt

ern

ativ

e 2

(O

ne

-way

C

ycle

Tra

cks)

Alt

ern

ativ

e 3

(T

wo

-Way

C

ycle

Tra

cks)

1st

Ch

oic

e V

ote

s6

168

2nd

Ch

oic

e V

ote

s7

155

Pu

blic

Wo

rksh

op

#1

Co

rrid

or

Alt

ern

ativ

e E

xerc

ise

Re

sult

sM

em

be

rs o

f th

e p

ub

lic a

lso

pro

vid

ed

inp

ut

on

th

e th

ree

solu

tio

n

alte

rnat

ives

. Pe

op

le w

ere

ab

le t

o in

dic

ate

thei

r p

refe

rre

d a

lte

rnat

ive

and

p

rovi

de

com

me

nts

an

d id

eas

for

refi

ne

me

nt.

Ap

pe

nd

ix E

incl

ud

es a

su

mm

ary

of

the

PA

C a

nd

Pu

blic

Wo

rksh

op

#1.

Su

mm

ary

of

Inp

ut

Alt

ern

ativ

e 2

had

mo

re 1

st C

ho

ice

vote

s th

an A

lte

rnat

ive

1 an

d 3

co

mb

ine

d.

Th

e 1s

t C

ho

ice

vote

s fo

r A

lte

rnat

ives

1 a

nd

3 m

ay h

ave

split

th

e vo

te o

f p

eo

ple

inte

rest

ed

in

a tw

o-w

ay f

acili

ty, w

ith

ab

ou

t h

alf

pre

ferr

ing

se

par

atio

n f

rom

pe

des

tria

ns

that

th

e tw

o-w

ay

cycl

e tr

ack

in A

lte

rnat

ive

3 o

ffe

rs.

Resu

lts fr

om Pu

blic

Wor

ksho

p #1

Page 18: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

21

170th

-Mer

lo Co

rrido

r Con

cept

Plan

A

B

B

SEGM

ENT 1

- PR

EFER

RED A

LTER

NATIV

E

PREF

ERRE

D ALT

ERNA

TIVE

A B

PREF

ERRE

D COR

RIDO

R FAC

ILITIE

SO

ne

-way

Cyc

le T

rack

Bic

ycle

Lan

e o

r B

uff

ere

d B

icyc

le L

ane

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

/3 -

PREF

ERRE

D ALT

ERNA

TIVE

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Dev

elo

pm

en

t o

f P

refe

rre

d A

lte

rnat

ive

Fo

llow

ing

th

e in

itia

l ro

un

d o

f m

eet

ing

s th

e p

roje

ct t

eam

w

ork

ed

to

inco

rpo

rate

th

e fe

ed

bac

k fr

om

th

e P

AC

an

d t

he

pu

blic

to

dev

elo

p a

pre

ferr

ed

co

nce

ptu

al d

esig

n. B

ase

d o

n

this

fe

ed

bac

k an

d t

he

info

rmat

ion

gat

he

red

in t

he

init

ial

rese

arch

an

d a

sses

sme

nt

of

the

corr

ido

r, th

e P

MT

mad

e th

e d

eci

sio

n t

o m

ove

to

war

d a

pre

ferr

ed

co

nce

pt

des

ign

th

at

incl

ud

es b

uff

ere

d b

icyc

le la

nes

or

on

e-w

ay c

ycle

tra

cks

thro

ug

ho

ut

the

corr

ido

r w

ith

a w

ide

, lan

dsc

ape

-bu

ffe

red

si

dew

alk

or

pat

h o

n o

ne

sid

e o

f th

e co

rrid

or

and

a s

tan

-d

ard

-wid

th b

uff

ere

d s

idew

alk

on

th

e o

pp

osi

te s

ide

. Th

e P

MT

det

erm

ine

d t

hat

th

e b

uff

er

wid

ths

and

fac

ility

wid

ths

may

var

y sl

igh

tly

in d

iffe

ren

t p

arts

of

the

corr

ido

r to

min

-im

ize

imp

acts

wh

ere

rig

ht-

of-

way

is li

mit

ed

, bu

t p

rovi

de

mo

re g

en

ero

us

faci

lity

wid

ths

wh

ere

rig

ht-

of-

way

allo

ws.

1

3

2

Page 19: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

22

Was

hingt

on Co

unty

, Ore

gon

Se

con

d R

ou

nd

of

Me

etin

gs

and

Pu

blic

Ou

tre

ach

In t

he

seco

nd

ro

un

d o

f o

utr

each

, th

e p

roje

ct t

eam

pre

sen

ted

an

init

ial

dra

ft la

you

t o

f th

e p

refe

rre

d c

on

cep

tual

des

ign

an

d r

eq

ues

ted

mo

re

det

aile

d in

pu

t an

d f

ee

db

ack

alo

ng

th

e co

rrid

or.

Th

is a

llow

ed

th

e p

roje

ct

team

to

be

ne

fi t

fro

m t

he

det

aile

d lo

cal k

no

wle

dg

e o

f th

e st

ake

ho

lde

rs

and

co

mm

un

ity

me

mb

ers

th

at li

ve o

r w

ork

in t

he

area

s su

rro

un

din

g

the

corr

ido

r an

d r

eg

ula

rly

trav

el o

n t

he

faci

litie

s in

th

e st

ud

y ar

ea. T

he

pro

ject

tea

m a

lso

so

ug

ht

inp

ut

on

po

ten

tial

fu

ture

des

ign

op

tio

ns

for

the

in

ters

ect

ion

of

170

th A

ven

ue

and

Me

rlo

Ro

ad.

Th

is in

ters

ect

ion

pre

sen

ts u

niq

ue

des

ign

ch

alle

ng

es in

th

e fu

ture

fo

r a

nu

mb

er

of

reas

on

s: •

Fu

ture

tra

ffi c

vo

lum

es a

re p

roje

cte

d t

o g

row

, wit

h a

hig

he

r p

ort

ion

o

f ve

hic

ula

r tr

affi

c tr

ave

ling

bet

we

en

Me

rlo

Ro

ad a

nd

th

e so

uth

ern

se

gm

en

t o

f 17

0th

Ave

nu

e (s

eg

me

nts

2 a

nd

3)

than

th

ere

is t

od

ay.

• W

ith

th

e w

ide

nin

g o

f M

erl

o R

oad

an

d t

he

sou

the

rn s

eg

me

nt

of

170

th

Ave

nu

e to

fi v

e la

nes

, th

e in

ters

ect

ion

will

be

the

tran

siti

on

po

int

fro

m

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n o

n t

he

no

rth

an

d w

est

leg

s to

tw

o

trav

el l

anes

in e

ach

dir

ect

ion

on

th

e so

uth

an

d e

ast

leg

s.

• B

eave

r A

cres

Ele

me

nta

ry S

cho

ol i

s im

me

dia

tely

ad

jace

nt

to t

he

inte

rse

ctio

n, n

ece

ssit

atin

g c

aref

ul c

on

sid

era

tio

n o

f cr

oss

ing

s an

d

trav

el o

f ch

ildre

n v

ia w

alki

ng

an

d b

ikin

g m

od

es s

urr

ou

nd

ing

th

e in

ters

ecti

on

.

• T

he

re is

a n

ee

d t

o p

rovi

de

safe

an

d c

om

fort

able

inte

rse

ctio

n d

esig

n

for

bic

yclis

ts, g

ive

n t

hat

th

e e

nh

ance

d b

icyc

le f

acili

ties

will

like

ly

serv

e ri

de

rs o

f va

ryin

g le

vels

of

com

fort

an

d a

bili

ties

.

• T

he

inte

rse

ctio

n o

f A

ug

ust

a L

ane

and

170

th A

ven

ue

may

ne

ed

a

sig

nal

or

en

han

ced

pe

des

tria

n c

ross

ing

in t

he

futu

re, a

nd

th

e cl

ose

p

roxi

mit

y o

f th

is in

ters

ect

ion

an

d 1

70th

Ave

nu

e/M

erl

o R

oad

can

cr

eate

op

era

tio

nal

ch

alle

ng

es.

• 17

0th

Ave

nu

e h

as a

nu

mb

er

of

acce

sses

on

th

e ea

st s

ide

sou

th o

f th

e 17

0th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, s

om

e o

f w

hic

h m

ay b

e re

con

fi g

ure

d in

th

e n

ear

futu

re.

Th

e p

roje

ct t

eam

pre

sen

ted

a s

et o

f p

ote

nti

al in

ters

ect

ion

des

ign

so

luti

on

s, in

clu

din

g a

re

des

ign

ed

sig

nal

ize

d in

ters

ect

ion

an

d a

ro

un

dab

ou

t an

d g

ath

ere

d in

pu

t o

n t

hes

e tw

o c

on

fi g

ura

tio

ns.

Me

mb

ers

o

f th

e P

AC

an

d p

arti

cip

ants

in t

he

pu

blic

wo

rksh

op

we

re f

airl

y ev

en

ly s

plit

in t

hei

r p

refe

ren

ces

for

a ro

un

dab

ou

t ve

rsu

s a

sig

nal

ize

d

inte

rse

ctio

n a

t th

is lo

cati

on

. Man

y p

eo

ple

exp

ress

ed

a d

esir

e fo

r a

sig

nal

at

Au

gu

sta

Lan

e an

d 1

70th

Ave

nu

e.

Ap

pe

nd

ix F

co

nta

ins

the

Co

mm

un

ity

Ou

trea

ch S

um

mar

y R

epo

rt,

incl

ud

ing

a s

um

mar

y o

f th

e co

mm

ents

rec

eive

d a

t th

e P

AC

Mee

tin

g a

nd

P

ub

lic W

ork

sho

p #

2.

Re

fi n

em

en

ts t

o P

refe

rre

d C

on

cep

tual

De

sig

n a

nd

Ad

dit

ion

al O

pti

on

s

In c

on

sid

era

tio

n o

f th

e se

con

d r

ou

nd

of

inp

ut

fro

m t

he

pu

blic

an

d

me

mb

ers

of

the

PA

C, t

he

pro

ject

tea

m c

on

du

cte

d a

mo

re d

etai

led

ro

un

d

of

anal

ysis

wit

h a

fo

cus

on

th

e ar

ea s

urr

ou

nd

ing

th

e in

ters

ect

ion

of

170

th

Ave

nu

e/M

erl

o R

oad

. Th

e an

alys

is in

clu

de

d:

• A

n a

sses

sme

nt

of

po

ten

tial

ad

dit

ion

al p

ed

estr

ian

cro

ssin

g lo

cati

on

s al

on

g t

he

corr

ido

r, to

en

able

pe

op

le t

o s

afe

ly c

ross

to

bu

s st

op

s an

d

to t

rave

l bet

we

en

des

tin

atio

ns

and

acc

ess

po

ints

on

op

po

site

sid

es

of

the

corr

ido

r.

• A

n a

sses

sme

nt

of

oth

er

inte

rse

ctio

ns

alo

ng

th

e co

rrid

or

to d

ete

rmin

e w

het

he

r ad

dit

ion

al t

raffi

c s

ign

als

are

like

ly t

o b

e w

arra

nte

d in

th

e fu

ture

.

• A

n a

sses

sme

nt

of

traf

fi c

op

era

tio

ns,

incl

ud

ing

ve

hic

ula

r d

ela

y an

d

qu

eu

ing

, at

170

th A

ven

ue/

Me

rlo

Ro

ad a

nd

170

th A

ven

ue/

Au

gu

sta

Lan

e fo

r b

oth

th

e ro

un

dab

ou

t an

d f

or

a si

gn

aliz

ed

inte

rse

ctio

n.

Bas

ed

on

th

e p

revi

ou

s an

alys

is, t

he

inp

ut

fro

m t

he

PA

C a

nd

pu

blic

, an

d r

esu

lts

of

the

add

itio

nal

op

era

tio

nal

an

alys

is, t

he

pro

ject

tea

m

det

erm

ine

d t

hat

th

e p

refe

rre

d c

on

cep

tual

des

ign

wo

uld

incl

ud

e a

rou

nd

abo

ut.

Ho

wev

er,

a si

gn

aliz

ed

inte

rse

ctio

n w

ou

ld a

lso

fu

lfi ll

the

ob

ject

ives

of

the

corr

ido

r an

d c

ou

ld b

e co

nsi

de

red

in f

utu

re d

esig

n

ph

ases

.

Th

e fu

ll an

alys

is is

ava

ilab

le in

Ap

pe

nd

ix G

, th

e Tr

ansp

ort

atio

n A

nal

ysis

M

emo

ran

du

m.

Fin

al C

on

cep

tual

De

sig

n a

nd

Nex

t S

tep

s

Th

e la

st p

has

e o

f th

e p

lan

nin

g p

roce

ss p

rod

uce

d t

he

fi n

al c

on

cep

tual

d

esig

n, a

s p

rese

nte

d in

Ch

apte

r 3

. Ch

apte

r 4

incl

ud

es o

the

r d

esig

n

op

tio

ns

that

can

be

con

sid

ere

d in

th

e u

pco

min

g d

esig

n p

has

es f

or

the

corr

ido

r.

Imag

e Cap

tion

Lack

of no

rthbo

und b

icycle

lane

on 17

0th A

venu

e nor

th of

Mer

lo Ro

ad.

Page 20: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

23

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Th

e p

rop

ose

d c

on

cep

tual

des

ign

pre

sen

ted

in t

he

follo

win

g p

ages

is t

he

resu

lt o

f a

tho

rou

gh

pla

nn

ing

pro

cess

ove

r th

e co

urs

e o

f th

e p

ast

year

, in

clu

din

g a

n a

sses

sme

nt

of

exis

tin

g c

on

dit

ion

s, d

eve

lop

me

nt

of

po

ten

tial

al

tern

ativ

es, p

ub

lic in

volv

em

en

t, a

nd

te

chn

ical

an

alys

is. T

he

con

cep

tual

d

esig

n m

eet

s th

e p

roje

ct o

bje

ctiv

es b

y:

• P

rovi

din

g s

ep

arat

ed

, co

mfo

rtab

le f

acili

ties

fo

r w

alki

ng

an

d b

icyc

ling

al

on

g t

he

corr

ido

r to

en

cou

rag

e u

se o

f th

ese

mo

des

by

pe

op

le o

f al

l ag

es a

nd

ski

ll le

vels

an

d r

ed

uce

re

lian

ce o

n t

he

auto

mo

bile

fo

r lo

cal

trav

el.

• R

eco

mm

en

din

g lo

cati

on

s fo

r p

rovi

din

g d

esig

nat

ed

cro

ssin

gs

for

pe

des

tria

ns

and

bic

yclis

ts in

ord

er

to im

pro

ve c

on

ne

ctiv

ity

to t

he

surr

ou

nd

ing

tra

il sy

ste

m a

nd

lan

d u

ses

and

imp

rove

acc

ess

to b

us

tran

sit

alo

ng

th

e co

rrid

or.

• P

rop

osi

ng

ad

just

me

nts

to

ve

hic

le la

ne

wid

ths

to m

inim

ize

rig

ht-

of-

way

imp

acts

wh

ile p

rovi

din

g a

de

qu

ate

veh

icu

lar

cap

acit

y fo

r fu

ture

tr

ave

l de

man

ds.

• U

sin

g a

des

ign

sp

ee

d o

f 3

5 m

ph

, lo

we

r th

an t

he

45

mp

h t

ypic

al

des

ign

sp

ee

d f

or

Co

un

ty a

rte

rial

s.•

Cre

atin

g t

he

op

po

rtu

nit

y to

en

han

ce t

he

nat

ura

l fea

ture

s al

on

g t

he

corr

ido

r an

d t

he

rip

aria

n c

orr

ido

r th

at in

ters

ect

s 17

0th

Ave

nu

e.

• P

rovi

din

g e

nh

ance

d a

cces

s to

th

e M

AX

lig

ht

rail

stat

ion

s an

d

off

ers

des

ign

so

luti

on

s fo

r b

us

sto

ps

alo

ng

th

e co

rrid

or

that

are

co

mfo

rtab

le f

or

bu

s d

rive

rs, b

us

rid

ers

, an

d b

icyc

lists

.

On

e o

f th

e o

bje

ctiv

es o

f th

e p

roje

ct w

as t

o e

xplo

re p

roje

ct p

has

ing

o

pti

on

s th

at c

ou

ld d

eliv

er

pe

des

tria

n/b

icyc

le f

acili

ties

in a

dva

nce

of

pla

nn

ed

ro

adw

ay w

ide

nin

g.

Ph

asin

g w

as c

on

sid

ere

d in

th

e d

eve

lop

me

nt

of

the

alte

rnat

ives

an

d t

he

pre

ferr

ed

alt

ern

ativ

e; h

ow

eve

r, th

e p

lace

me

nt

of

on

e-w

ay c

ycle

tra

cks

on

eac

h s

ide

of

the

road

way

mak

es p

has

ing

d

iffi

cult

an

d d

oes

no

t o

ffe

r th

e p

oss

ibili

ty t

o c

on

stru

ct a

tw

o-w

ay

bic

ycle

fac

ility

on

on

e si

de

of

the

road

way

pri

or

to t

he

full

wid

en

ing

. H

ow

eve

r, th

e p

rop

ose

d d

esig

n d

oes

off

er

oth

er

ph

asin

g o

pp

ort

un

itie

s fo

r in

cre

me

nta

lly e

nh

anci

ng

th

e p

ed

estr

ian

an

d b

icyc

le f

acili

ties

:

• Im

pro

vem

en

ts c

an b

e d

on

e b

y se

gm

en

t, w

ith

ou

t h

avin

g t

o f

un

d

the

full

corr

ido

r im

pro

vem

en

ts a

t th

e sa

me

tim

e. S

eg

me

nt

1 re

qu

ires

re

lati

vely

min

or

chan

ges

an

d im

pro

vem

en

ts c

om

par

ed

to

its

exis

tin

g c

on

dit

ion

. Se

gm

en

t 2

wo

uld

be

the

mo

st c

ost

ly t

o

con

stru

ct, d

ue

to t

he

ne

ed

to

re

pla

ce t

he

bri

dg

e. S

eg

me

nt

3 (

Me

rlo

R

oad

) co

uld

be

do

ne

at a

dif

fere

nt

tim

e th

an t

he

oth

er

seg

me

nts

.•

Th

ere

is a

po

ssib

ility

of

con

stru

ctin

g a

sid

ewal

k an

d c

ycle

tra

ck

on

on

e si

de

of

the

road

way

pri

or

to f

ull

wid

en

ing

to

imp

rove

p

ed

estr

ian

acc

ess.

Ho

wev

er,

the

pro

visi

on

of

a b

icyc

le f

acili

ty o

n

on

ly o

ne

sid

e o

f th

e ro

adw

ay c

ou

ld in

vite

tw

o-w

ay b

icyc

le t

rave

l o

n a

fac

ility

no

t d

esig

ne

d f

or

two

-way

tra

vel,

and

may

res

ult

in

cro

ssin

g m

ove

me

nts

no

t an

tici

pat

ed

un

de

r th

e fu

ll d

esig

n.

• S

eg

me

nt

3 c

urr

en

tly

has

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n a

nd

a

two

-way

left

tu

rn la

ne

in t

he

cen

ter.

Fiv

e fo

ot

bic

ycle

lan

es c

ou

ld

be

add

ed

to

th

is s

eg

me

nt

in t

he

nea

r te

rm t

hro

ug

h r

e-s

trip

ing

, w

ith

ou

t m

ovi

ng

th

e ex

isti

ng

cu

rbs.

Re

-str

ipin

g w

ou

ld r

esu

lt in

a

cro

ss s

ect

ion

wit

h 5

-fo

ot

bic

ycle

lan

es, 1

1-fo

ot

trav

el l

anes

, an

d a

12

-fo

ot

two

-way

left

tu

rn la

ne

or

cen

ter

me

dia

n.

Ap

pe

nd

ix H

co

nta

ins

a p

lan

nin

g-l

eve

l co

st e

stim

ate

fo

r im

ple

me

nti

ng

th

e p

refe

rre

d c

on

cep

tual

de

sig

n o

n S

eg

me

nt

2.

CHAP

TER 0

3 | P

ROPO

SED

CONC

EPTU

AL DE

SIGN

SEGM

ENT 1

- CO

NCEP

T PLA

N

SEGM

ENT 2

/3 -

CONC

EPT P

LAN

Co

rrid

or

Se

gm

en

ts

1

3

2

Page 21: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

23

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Th

e p

rop

ose

d c

on

cep

tual

des

ign

pre

sen

ted

in t

he

follo

win

g p

ages

is t

he

resu

lt o

f a

tho

rou

gh

pla

nn

ing

pro

cess

ove

r th

e co

urs

e o

f th

e p

ast

year

, in

clu

din

g a

n a

sses

sme

nt

of

exis

tin

g c

on

dit

ion

s, d

eve

lop

me

nt

of

po

ten

tial

al

tern

ativ

es, p

ub

lic in

volv

em

en

t, a

nd

te

chn

ical

an

alys

is. T

he

con

cep

tual

d

esig

n m

eet

s th

e p

roje

ct o

bje

ctiv

es b

y:

• P

rovi

din

g s

ep

arat

ed

, co

mfo

rtab

le f

acili

ties

fo

r w

alki

ng

an

d b

icyc

ling

al

on

g t

he

corr

ido

r to

en

cou

rag

e u

se o

f th

ese

mo

des

by

pe

op

le o

f al

l ag

es a

nd

ski

ll le

vels

an

d r

ed

uce

re

lian

ce o

n t

he

auto

mo

bile

fo

r lo

cal

trav

el.

• R

eco

mm

en

din

g lo

cati

on

s fo

r p

rovi

din

g d

esig

nat

ed

cro

ssin

gs

for

pe

des

tria

ns

and

bic

yclis

ts in

ord

er

to im

pro

ve c

on

ne

ctiv

ity

to t

he

surr

ou

nd

ing

tra

il sy

ste

m a

nd

lan

d u

ses

and

imp

rove

acc

ess

to b

us

tran

sit

alo

ng

th

e co

rrid

or.

• P

rop

osi

ng

ad

just

me

nts

to

ve

hic

le la

ne

wid

ths

to m

inim

ize

rig

ht-

of-

way

imp

acts

wh

ile p

rovi

din

g a

de

qu

ate

veh

icu

lar

cap

acit

y fo

r fu

ture

tr

ave

l de

man

ds.

• U

sin

g a

des

ign

sp

ee

d o

f 3

5 m

ph

, lo

we

r th

an t

he

45

mp

h t

ypic

al

des

ign

sp

ee

d f

or

Co

un

ty a

rte

rial

s.•

Cre

atin

g t

he

op

po

rtu

nit

y to

en

han

ce t

he

nat

ura

l fea

ture

s al

on

g t

he

corr

ido

r an

d t

he

rip

aria

n c

orr

ido

r th

at in

ters

ect

s 17

0th

Ave

nu

e.

• P

rovi

din

g e

nh

ance

d a

cces

s to

th

e M

AX

lig

ht

rail

stat

ion

s an

d

off

ers

des

ign

so

luti

on

s fo

r b

us

sto

ps

alo

ng

th

e co

rrid

or

that

are

co

mfo

rtab

le f

or

bu

s d

rive

rs, b

us

rid

ers

, an

d b

icyc

lists

.

On

e o

f th

e o

bje

ctiv

es o

f th

e p

roje

ct w

as t

o e

xplo

re p

roje

ct p

has

ing

o

pti

on

s th

at c

ou

ld d

eliv

er

pe

des

tria

n/b

icyc

le f

acili

ties

in a

dva

nce

of

pla

nn

ed

ro

adw

ay w

ide

nin

g.

Ph

asin

g w

as c

on

sid

ere

d in

th

e d

eve

lop

me

nt

of

the

alte

rnat

ives

an

d t

he

pre

ferr

ed

alt

ern

ativ

e; h

ow

eve

r, th

e p

lace

me

nt

of

on

e-w

ay c

ycle

tra

cks

on

eac

h s

ide

of

the

road

way

mak

es p

has

ing

d

iffi

cult

an

d d

oes

no

t o

ffe

r th

e p

oss

ibili

ty t

o c

on

stru

ct a

tw

o-w

ay

bic

ycle

fac

ility

on

on

e si

de

of

the

road

way

pri

or

to t

he

full

wid

en

ing

. H

ow

eve

r, th

e p

rop

ose

d d

esig

n d

oes

off

er

oth

er

ph

asin

g o

pp

ort

un

itie

s fo

r in

cre

me

nta

lly e

nh

anci

ng

th

e p

ed

estr

ian

an

d b

icyc

le f

acili

ties

:

• Im

pro

vem

en

ts c

an b

e d

on

e b

y se

gm

en

t, w

ith

ou

t h

avin

g t

o f

un

d

the

full

corr

ido

r im

pro

vem

en

ts a

t th

e sa

me

tim

e. S

eg

me

nt

1 re

qu

ires

re

lati

vely

min

or

chan

ges

an

d im

pro

vem

en

ts c

om

par

ed

to

its

exis

tin

g c

on

dit

ion

. Se

gm

en

t 2

wo

uld

be

the

mo

st c

ost

ly t

o

con

stru

ct, d

ue

to t

he

ne

ed

to

re

pla

ce t

he

bri

dg

e. S

eg

me

nt

3 (

Me

rlo

R

oad

) co

uld

be

do

ne

at a

dif

fere

nt

tim

e th

an t

he

oth

er

seg

me

nts

.•

Th

ere

is a

po

ssib

ility

of

con

stru

ctin

g a

sid

ewal

k an

d c

ycle

tra

ck

on

on

e si

de

of

the

road

way

pri

or

to f

ull

wid

en

ing

to

imp

rove

p

ed

estr

ian

acc

ess.

Ho

wev

er,

the

pro

visi

on

of

a b

icyc

le f

acili

ty o

n

on

ly o

ne

sid

e o

f th

e ro

adw

ay c

ou

ld in

vite

tw

o-w

ay b

icyc

le t

rave

l o

n a

fac

ility

no

t d

esig

ne

d f

or

two

-way

tra

vel,

and

may

res

ult

in

cro

ssin

g m

ove

me

nts

no

t an

tici

pat

ed

un

de

r th

e fu

ll d

esig

n.

• S

eg

me

nt

3 c

urr

en

tly

has

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n a

nd

a

two

-way

left

tu

rn la

ne

in t

he

cen

ter.

Fiv

e fo

ot

bic

ycle

lan

es c

ou

ld

be

add

ed

to

th

is s

eg

me

nt

in t

he

nea

r te

rm t

hro

ug

h r

e-s

trip

ing

, w

ith

ou

t m

ovi

ng

th

e ex

isti

ng

cu

rbs.

Re

-str

ipin

g w

ou

ld r

esu

lt in

a

cro

ss s

ect

ion

wit

h 5

-fo

ot

bic

ycle

lan

es, 1

1-fo

ot

trav

el l

anes

, an

d a

12

-fo

ot

two

-way

left

tu

rn la

ne

or

cen

ter

me

dia

n.

Ap

pe

nd

ix H

co

nta

ins

a p

lan

nin

g-l

eve

l co

st e

stim

ate

fo

r im

ple

me

nti

ng

th

e p

refe

rre

d c

on

cep

tual

de

sig

n o

n S

eg

me

nt

2.

CHAP

TER 0

3 | P

ROPO

SED

CONC

EPTU

AL DE

SIGN

SEGM

ENT 1

- CO

NCEP

T PLA

N

SEGM

ENT 2

/3 -

CONC

EPT P

LAN

Co

rrid

or

Se

gm

en

ts

1

3

2

Page 22: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

24W

ashin

gton

Coun

ty, O

rego

n

Th

ree

lan

e cr

oss

se

ctio

n

wit

h b

icyc

le la

ne

s/b

uff

ere

d

bic

ycle

lan

es

and

sid

ewal

ks.

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

s.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

170

th A

ven

ue

bet

we

en

Me

rlo

Ro

ad a

nd

Bas

elin

e R

oad

. B

eca

use

it is

loca

ted

in a

w

etla

nd

are

a, t

he

faci

lity

will

ne

ed

to

be

un

de

r th

e ro

adw

ay o

r th

e w

etla

nd

s w

ill n

ee

d t

o b

e m

itig

ate

d.

On

-str

eet

par

kin

g is

p

rop

ose

d o

n t

he

we

st s

ide

of

170

th A

ven

ue

in t

his

are

a to

su

pp

ort

a p

ote

nti

al f

utu

re

mix

ed

-use

re

dev

elo

pm

en

t w

ith

sto

refr

on

t re

tail.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Cro

ssin

g lo

cati

on

n

ee

ds

to b

e m

on

ito

red

to

ass

ess

ne

ed

fo

r e

nh

ance

me

nts

.

Th

e p

rop

ose

d r

ou

nd

abo

ut

at t

he

inte

rse

ctio

n o

f 17

0th

Ave

nu

e/M

erl

o R

oad

is a

mu

lti-

lan

e ro

un

dab

ou

t th

at

will

acc

om

mo

dat

e tr

affi

c vo

lum

e fo

reca

sts

and

is d

esi

gn

ed

to

re

du

ce a

pp

roac

hin

g v

eh

icle

sp

ee

ds

to le

ss

than

25

mile

s p

er

ho

ur.

Th

e ro

un

dab

ou

t d

esi

gn

has

a lo

we

r m

ain

ten

ance

co

st t

han

a t

raffi

c s

ign

al a

nd

has

fe

we

r co

nfl

ict

po

ints

fo

r ve

hic

les.

Th

e p

rop

ose

d r

ou

nd

abo

ut

de

sig

n a

lso

off

ers

be

ne

fi ts

fo

r p

ed

est

rian

s an

d b

icyc

lists

. Bic

yclis

ts c

an c

ho

ose

to

en

ter

the

wid

en

ed

sid

ewal

k ap

pro

ach

ing

th

e in

ters

ect

ion

an

d u

se

the

pe

de

stri

an c

ross

ing

s. T

he

cro

ssin

gs

are

split

wit

h r

efu

ge

isla

nd

s, s

o p

ed

est

rian

s o

r b

icyc

lists

usi

ng

th

e si

dew

alks

on

ly n

ee

d t

o c

ross

on

e d

ire

ctio

n o

f tr

affi

c at

a t

ime

. Eac

h le

g o

f th

e ro

un

dab

ou

t h

as a

de

sig

nat

ed

cr

oss

ing

. M

ore

co

nfi

de

nt

bic

yclis

ts c

an a

lso

ch

oo

se t

o e

nte

r th

e ve

hic

le t

rave

l lan

e ap

pro

ach

ing

th

e ro

un

dab

ou

t an

d n

avig

ate

thro

ug

h t

he

inte

rse

ctio

n a

s a

veh

icle

wo

uld

. Be

cau

se v

eh

icu

lar

spe

ed

s ar

e sl

ow

ed

co

min

g in

to t

he

rou

nd

abo

ut,

th

is o

pti

on

can

be

com

fort

able

fo

r so

me

bic

yclis

ts.

It is

like

ly t

hat

e

nh

ance

d c

ross

ing

tr

eat

me

nts

will

be

ne

ed

ed

at

this

loca

tio

n

as p

ed

est

rian

vo

lum

es

incr

eas

e.

Wh

ile a

sig

nal

is

no

t cu

rre

ntl

y w

arra

nte

d a

t th

is

loca

tio

n, s

ign

al

war

ran

ts s

ho

uld

b

e m

on

ito

red

as

volu

me

s ch

ang

e.

N

Page 23: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

25

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Co

nve

rtin

g V

en

dla

Par

k L

ane

to a

rig

ht-

in r

igh

t-o

ut

acce

ss c

ou

ld a

llow

fo

r re

du

ctio

n o

f th

e m

ed

ian

fo

r a

gre

ate

r d

ista

nce

, re

sult

ing

in r

ed

uce

d c

ost

s an

d r

igh

t-o

f-w

ay n

ee

ds.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is

are

a to

tre

at t

he

imp

erv

iou

s su

rfac

e o

n

170

th A

ven

ue

corr

ido

r b

etw

ee

n A

lexa

nd

er

Str

eet

an

d M

erl

o R

oad

.

Cro

ssin

g t

o

nat

ure

par

k tr

ail n

ee

ds

to

be

mo

nit

ore

d

to a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

It is

like

ly t

hat

en

han

ced

cr

oss

ing

tre

atm

en

ts

will

be

ne

ed

ed

at

this

lo

cati

on

as

pe

de

stri

an

volu

me

s in

cre

ase

du

e to

th

e n

atu

re p

ark

trai

l an

d

po

ten

tial

fu

ture

bu

s st

op

.

Th

e p

rop

ose

d d

esi

gn

do

es

hav

e im

pac

ts t

o s

om

e o

f th

e m

atu

re t

ree

s lin

ing

th

e Tu

alat

in H

ills

Nat

ure

Par

k th

at a

re

curr

en

tly

loca

ted

wit

hin

th

e ri

gh

t-o

f-w

ay. T

he

de

sig

n in

th

ese

loca

tio

ns

can

co

nsi

de

r p

erv

iou

s si

dew

alk

or

bic

ycle

fa

cilit

y tr

eat

me

nts

to

en

sure

th

e h

eal

th o

f tr

ee

s th

at

rem

ain

in c

lose

pro

xim

ity

to t

he

stre

et.

Th

e 2

013

Tu

alat

in V

alle

y H

igh

way

Co

rrid

or

Pla

n c

alls

fo

r ad

dit

ion

al t

urn

lan

es

at t

his

inte

rse

ctio

n.

Th

ese

fe

atu

res

are

no

t in

clu

de

d in

th

e co

nce

ptu

al d

esi

gn

an

d r

eq

uir

e fu

rth

er

stu

dy.

Th

e b

rid

ge

cou

ld b

e n

arro

we

d b

y re

du

cin

g

the

me

dia

n (

no

la

nd

scap

ing

) to

sav

e co

sts,

re

du

ce r

igh

t-o

f-w

ay n

ee

ds,

an

d

min

imiz

e tr

ee

imp

acts

.

Re

con

stru

ctio

n o

f th

e b

rid

ge

cou

ld a

llow

fo

r th

e p

ote

nti

al o

f a

pe

de

stri

an

un

de

r-cr

oss

ing

an

d

en

han

cem

en

ts t

o t

he

exis

tin

g r

ipar

ian

co

rrid

or

alo

ng

Be

ave

rto

n C

ree

k,

wh

ich

is a

lso

a c

ross

ing

ar

ea

for

anim

als.

N

Th

e p

rop

ose

d

de

sig

n t

ies

in w

ith

th

e ex

isti

ng

cro

ss

sect

ion

of

170

th

Ave

nu

e ju

st n

ort

h o

f A

lexa

nd

er

Str

eet

.

Page 24: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

26

Was

hingt

on Co

unty

, Ore

gon

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

Cro

ssin

g lo

cati

on

ne

ed

s to

be

mo

nit

ore

d t

o a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n 1

70th

Ave

nu

e an

d

app

roxi

mat

ely

12

00

fe

et n

ort

h o

f M

erl

o

Co

urt

(cr

est

po

int

of

Me

rlo

Ro

ad).

Ret

ain

ing

wal

l may

be

ne

ed

ed

in t

his

are

a.

Me

dia

n c

ou

ld b

e re

du

ced

b

etw

ee

n M

erl

o C

ou

rt a

nd

th

e b

us

gar

age

to s

ave

cost

s, r

ed

uce

rig

ht-

of-

way

n

ee

ds,

an

d m

inim

ize

tre

e im

pac

ts.

Pro

po

sed

de

sig

n p

rovi

de

s a

con

ne

ctio

n t

o a

nd

fro

m

170

th A

ven

ue

to t

he

reg

ion

al t

rail

net

wo

rk.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n t

he

stre

et c

rest

po

int

and

Je

nki

ns

Ro

ad.

N

Th

e p

rop

ose

d d

esi

gn

ti

es

in w

ith

th

e cu

rre

nt

158

th A

ven

ue

Co

un

ty

imp

rove

me

nt

pro

ject

.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Page 25: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 26: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 27: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 28: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 29: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

INT

RO

DU

CT

ION

2W

ashin

gton

Coun

ty, O

rego

n

As

Was

hin

gto

n C

ou

nty

’s u

rban

are

a d

eve

lop

s an

d u

rban

izes

, th

e C

ou

nty

h

as c

on

tin

ual

ly s

ou

gh

t to

se

rve

the

tran

spo

rtat

ion

ne

ed

s o

f it

s re

sid

en

ts,

wo

rke

rs, a

nd

vis

ito

rs. W

ash

ing

ton

Co

un

ty id

en

tifi

ed

th

e S

W 1

70th

A

ven

ue

/ S

W M

erl

o R

oad

co

rrid

or

as a

n a

rea

of

ne

ed

ed

imp

rove

me

nt

in

ord

er

to b

ette

r se

rve

its

div

ers

ity

of

use

rs. T

he

SW

170

th A

ven

ue

/ S

W

Me

rlo

Ro

ad C

on

cep

tual

Des

ign

Pla

n p

roje

ct h

as d

eve

lop

ed

a c

on

cep

tual

d

esig

n f

or

thes

e tw

o c

on

ne

ctin

g a

rte

rial

ro

adw

ays,

bas

ed

on

: •

An

an

alys

is o

f ex

isti

ng

co

nd

itio

ns,

op

po

rtu

nit

ies

and

co

nst

rain

ts;

• A

bro

ade

r lo

ok

at s

urr

ou

nd

ing

nei

gh

bo

rho

od

co

nte

xt;

• A

n e

valu

atio

n o

f b

est

pra

ctic

es a

nd

inn

ova

tive

des

ign

s; a

nd

• A

n in

clu

sive

pu

blic

invo

lve

me

nt

pro

cess

. T

his

co

nce

ptu

al d

esig

n p

rovi

des

Was

hin

gto

n C

ou

nty

an

d c

orr

ido

r st

ake

ho

lde

rs w

ith

a h

igh

er

leve

l of

cert

ain

ty a

s to

ho

w t

he

corr

ido

r w

ill lo

ok

and

fu

nct

ion

in t

he

futu

re a

nd

pre

par

es t

he

Co

un

ty f

or

the

up

com

ing

ph

ases

of

des

ign

ing

, en

gin

ee

rin

g a

nd

co

nst

ruct

ing

im

pro

vem

en

ts in

th

e co

rrid

or.

Th

is r

ep

ort

pre

sen

ts t

he

pro

ject

pu

rpo

se a

nd

bac

kgro

un

d, t

he

pla

nn

ing

p

roce

ss, t

he

pre

ferr

ed

des

ign

incl

ud

ing

a c

ost

est

imat

e fo

r a

po

ten

tial

fi

rst

ph

ase

alo

ng

170

th A

ven

ue

fro

m M

erl

o R

oad

to

Ale

xan

de

r S

tre

et,

and

des

ign

op

tio

ns

that

may

be

con

sid

ere

d d

uri

ng

th

e d

esig

n p

has

es.

Th

e p

refe

rre

d d

esig

n is

su

bje

ct t

o r

efi

ne

me

nt

and

mo

difi

cati

on

wh

en

th

e p

roje

ct is

fu

nd

ed

an

d m

ove

s in

to m

ore

det

aile

d d

esig

n a

nd

en

gin

ee

rin

g

ph

ases

.

INTR

ODUC

TION

170th

Aven

ue ne

ar Tu

alatin

Hills

Nat

ure P

ark.

Front

age i

mpr

ovem

ents

on 17

0th A

venu

e sou

th of

MAX

cros

sing.

Heav

y veh

icle o

n 170

th Av

enue

.Cr

ossw

alk at

170t

h Ave

nue/

Base

line R

oad i

nter

secti

on.

Page 30: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

01P

RO

JEC

T P

UR

PO

SE

AN

D C

ON

TE

XT

3170

th-M

erlo

Corri

dor C

once

pt Pl

an

SW170THAVE

SW M

ER

LO R

D

Segm

ent 1

Segm

ent 1

Segm

ent 2

Segm

ent 2

Segm

ent 3

Segm

ent 3

SWM

ER

LOR

D

SW J

ENKI

NSRD

SWJO

HN

SON

ST

SW178THAVE

SW 167T H AVE

SW

NIK

SD

R

SW PHEASANT DRSW

F RA

NC

ES

ST

SW172NDCT

SWW

HI T

LEY

WAY

SWB

EAV

ER

CT

SWH

UR

RE

L LLN

SW CHATELAIN

DR

SW171STTER

SW

AU

DU

BO

NST

SWCONCORD

WAY

SWA

UG

US

TA L

N

SWEI

RW

ENS

T

W B

AS

ELI

NE

RD

SW173RDTER

SW

LIBE

RTYBELL

DR

SW A

RB

ELA

CT

SW

AR

BO

RC

RE

ST

WAY

SW171STPL

SW

PL E

AS

AN

TON

LN

SWSANMATEOTER

SW 175TH AVE

SW 162ND AVE

SW

TUA

LATI

NVA

L LE

YH

WY

SW176TH TER

SWM

AS

ON

LN

SW178THPL

SW

GA

GE

LN

SW170THAVE

SWM

ILLI

KA

NW

AY

SW

WAT

ERLEAF ST

SW C

OR

ON

A L

N

SW M

AR

TY L

N

SW

L AW

TON

ST

SW

WAT

ERL

EA

FL N

SWBURLINGTONDR

SW154THTER

SW

167THPL

SW 172ND TER

SW

GR

EY

STONECT

SW177THTER

SW 175TH PL

SWW

AK

EMS

TS

WW

AKE

ML N

SWW

ILL

IAM

SBURGWAY

SW

BE

RK

ELE

YLN

SW 163RD AVE

SW 166TH AV

E

SW A

LEXA

ND

ERST

SW JAY CT

SW 176TH AVE

S W BOS

TO

NWAY

SW 174TH AVE

SWS

UL L

IVA

NLN

SWELLIOTTPL

SWBUNKEROAKRD

SWN

YSSE

NST

SW172ND AVE

SW

153R

D DR

SW STE ELE

W

AY

SWC

AS

HE

W

WAY

SW

PH

EA

SAN

TLN

SW J

AY S

T

SW W

ALKE

R RD

SWVALLEY

FORGE WAY

SWM

ERLO

CT

SW179THAVE

SW158THAVE

SW

R ICHM

ON

DW

AY

SW

SA

ND

RA

LN

SWSH

AW S

T

MER

L OG

ARAGETC

SWM

ERLO

DR

SW

ES

TUA

RY

DR

Th

e S

W 1

70th

Ave

nu

e/S

W M

erl

o R

oad

co

rrid

or

is a

cri

tica

l no

rth

-so

uth

co

nn

ect

ion

bet

we

en

res

ide

nti

al n

eig

hb

orh

oo

ds,

maj

or

em

plo

yme

nt

hu

bs,

tra

nsi

t lin

es, s

cho

ols

an

d p

ark

faci

litie

s; h

ow

eve

r, it

cu

rre

ntl

y fa

ces

maj

or

chal

len

ges

fo

r va

rio

us

mo

des

of

trav

el.

Th

e co

rrid

or

is

in a

hig

h-g

row

th a

rea

of

Was

hin

gto

n C

ou

nty

th

at is

exp

eri

en

cin

g

maj

or

dev

elo

pm

en

t an

d r

ed

eve

lop

me

nt

acti

vity

in b

oth

co

mm

erc

ial

and

res

ide

nti

al s

ect

ors

. Nei

gh

bo

rho

od

s to

th

e w

est

and

so

uth

ho

st

com

mu

nit

ies

of

con

cern

, in

clu

din

g lo

we

r in

com

e, m

ino

rity

an

d E

ng

lish

la

ng

uag

e-l

earn

ing

res

ide

nts

. Th

e co

rrid

or

curr

en

tly

do

es n

ot

serv

e th

e n

ee

ds

of

pe

op

le w

alki

ng

, bic

yclin

g a

nd

acc

essi

ng

tra

nsi

t, a

nd

it is

p

roje

cte

d t

o h

ave

incr

ease

d v

eh

icu

lar

con

ges

tio

n in

th

e fu

ture

.

Fig

ure

1 s

ho

ws

the

stu

dy

area

of

the

corr

ido

r. T

he

corr

ido

r is

bro

ken

into

th

ree

dis

tin

ct s

eg

me

nts

: •

Se

gm

en

t 1

is S

W 1

70th

Ave

nu

e n

ort

h o

f S

W M

erl

o R

oad

to

W

Bas

elin

e R

oad

;

• S

eg

me

nt

2 is

SW

170

th A

ven

ue

sou

th o

f S

W M

erl

o R

oad

to

SW

Tu

alat

in V

alle

y H

igh

way

, an

d

• S

eg

me

nt

3 is

SW

Me

rlo

Ro

ad b

etw

ee

n S

W 1

70th

Ave

nu

e an

d S

W

Jen

kin

s R

oad

.

CHAP

TER 0

1 | PR

OJEC

T PUR

POSE

AND

CONT

EXT

Segm

ent 1

: 170t

h Ave

nue

Segm

ent 2

: 170t

h Ave

nue

Segm

ent 3

: Mer

lo Ro

ad

Fig

ure

1: B

ase

Map

an

d S

tud

y A

rea

Page 31: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

01P

RO

JEC

T P

UR

PO

SE

AN

D C

ON

TE

XT

4W

ashin

gton

Coun

ty, O

rego

n

Pro

ject

Go

al a

nd

Ob

ject

ive

s

Th

e o

vera

rch

ing

go

al o

f th

is P

roje

ct is

to

dev

elo

p a

co

nce

ptu

al p

lan

fo

r st

reet

des

ign

tre

atm

en

ts a

lon

g S

W 1

70th

Ave

nu

e b

etw

ee

n W

Bas

elin

e R

oad

an

d S

W T

ual

atin

Val

ley

Hig

hw

ay (

OR

8)

and

alo

ng

SW

Me

rlo

Ro

ad

bet

we

en

SW

Je

nki

ns

Ro

ad a

nd

SW

170

th A

ven

ue

to p

rovi

de

faci

litie

s fo

r m

ult

i-m

od

al c

ircu

lati

on

, to

su

pp

ort

ad

jace

nt

lan

d u

se a

nd

dev

elo

pm

en

t,

and

to

co

nce

ptu

ally

ad

dre

ss a

nu

mb

er

of

env

iro

nm

en

tal c

on

stra

ints

in

clu

din

g r

ipar

ian

, fl o

od

pla

in, w

etla

nd

, fo

rest

an

d w

ildlif

e h

abit

at

reso

urc

es.

Sp

eci

fi c

ob

ject

ives

du

rin

g t

he

dev

elo

pm

en

t o

f th

e co

nce

pt

pla

n w

ere

to

:

• C

reat

e a

corr

ido

r th

at w

ill e

nco

ura

ge

and

su

pp

ort

th

e u

se o

f ac

tive

tr

ansp

ort

atio

n m

od

es a

nd

re

du

ce r

elia

nce

on

th

e au

tom

ob

ile.

• C

reat

e a

corr

ido

r th

at b

ette

r lin

ks A

loh

a n

eig

hb

orh

oo

ds

wit

h n

earb

y d

esti

nat

ion

s in

clu

din

g t

wo

sch

oo

ls, t

wo

Met

rop

olit

an A

rea

Exp

ress

(M

AX

) lig

ht

rail

stat

ion

s, T

ual

atin

Hill

s N

atu

re P

ark,

an

d a

maj

or

em

plo

yme

nt

hu

b a

nch

ore

d b

y N

ike

to t

he

no

rth

east

of

the

stu

dy

are

a.

• Id

en

tify

at

a p

lan

nin

g le

vel m

ean

s to

ad

dre

ss p

ote

nti

al e

nvir

on

me

nta

l im

pac

ts in

clu

din

g s

torm

wat

er

run

off

fro

m a

dd

itio

nal

imp

erv

iou

s su

rfac

es, c

on

stru

ctio

n w

ith

in fl

oo

dp

lain

, wet

lan

d a

nd

/or

rip

aria

n

area

s, a

nd

imp

acts

on

mat

ure

tre

es, c

on

sid

eri

ng

gre

en

str

eet

tr

eatm

en

ts a

nd

mo

re c

onv

en

tio

nal

mea

sure

s.

• A

dd

ress

rig

ht-

of-

way

an

d a

cces

s m

anag

em

en

t n

ee

ds.

• F

or

the

pu

rpo

se o

f b

icyc

le a

nd

pe

des

tria

n m

ob

ility

, exa

min

e th

e lo

cal s

tre

et a

nd

tra

il n

etw

ork

to

ad

dre

ss s

afet

y an

d c

on

ne

ctiv

ity,

in

clu

din

g c

on

ne

ctio

ns

ne

cess

ary

to li

nk

adja

cen

t d

eve

lop

me

nt

to a

ny

alte

rnat

ive

par

alle

l bic

ycle

or

pe

des

tria

n f

acili

ties

.

• E

xplo

re t

he

app

licat

ion

of

inn

ova

tive

bik

eway

tre

atm

en

ts f

or

170

th

Ave

nu

e an

d M

erl

o R

oad

, po

ten

tial

ly in

clu

din

g a

tw

o-w

ay c

ycle

tra

ck,

on

e-w

ay c

ycle

tra

cks,

or

bu

ffe

red

bic

ycle

lan

es.

• E

xplo

re o

pp

ort

un

itie

s to

acc

om

mo

dat

e b

us

sto

ps,

incl

ud

ing

im

pro

ved

pe

des

tria

n a

cces

s, a

lon

g a

nd

acr

oss

170

th A

ven

ue

and

M

erl

o R

oad

in a

nti

cip

atio

n o

f a

TriM

et-p

rop

ose

d b

us

line

.

• P

rovi

de

safe

ro

ute

s an

d c

ross

ing

s fo

r b

icyc

lists

an

d p

ed

estr

ian

s to

ar

ea d

esti

nat

ion

s su

ch a

s B

eave

r A

cres

Ele

me

nta

ry S

cho

ol,

Me

rlo

S

tati

on

Hig

h S

cho

ol a

nd

Tu

alat

in H

ills

Nat

ure

Par

k.

• E

xplo

re p

roje

ct p

has

ing

op

tio

ns

that

co

uld

de

live

r p

ed

estr

ian

/b

icyc

le f

acili

ties

in a

dva

nce

of

road

way

wid

en

ing

to

th

e u

ltim

ate

nu

mb

er

of

lan

es d

esig

nat

ed

in t

he

Tran

spo

rtat

ion

Sys

tem

Pla

n.

• E

ng

age

a b

road

ran

ge

of

pu

blic

an

d s

take

ho

lde

rs in

des

ign

ing

co

nce

pts

fo

r 17

0th

Ave

nu

e an

d M

erl

o R

oad

, en

suri

ng

co

mp

lian

ce

wit

h T

itle

VI r

eg

ula

tio

ns

reg

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Page 32: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

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Page 33: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

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Page 35: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

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e p

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nin

g p

roce

ss k

icke

d o

ff in

Ju

ne

2014

an

d w

as d

esig

ne

d t

o

en

able

a t

ho

rou

gh

co

nsi

de

rati

on

of

the

exis

tin

g c

on

text

in t

he

corr

ido

r, co

nsi

de

rati

on

of

a va

riet

y o

f p

ote

nti

al s

olu

tio

ns,

op

po

rtu

nit

ies

for

pu

blic

an

d s

take

ho

lde

r in

pu

t an

d f

ee

db

ack,

an

d d

eve

lop

me

nt

of

a p

refe

rre

d

alte

rnat

ive

for

the

corr

ido

r. A

co

re p

roje

ct m

anag

em

en

t te

am (

PM

T),

in

clu

din

g p

lan

nin

g a

nd

en

gin

ee

rin

g s

taff

fro

m W

ash

ing

ton

Co

un

ty,

an O

DO

T g

ran

t m

anag

er,

and

th

e co

nsu

ltan

t p

roje

ct m

anag

er,

led

th

e d

eve

lop

me

nt

of

the

pla

n. T

his

tea

m w

as g

uid

ed

by

a P

roje

ct A

dvi

sory

C

om

mit

tee

(PA

C),

mad

e u

p o

f lo

cal p

ub

lic r

ep

rese

nta

tive

s an

d o

the

r co

rrid

or

stak

eh

old

ers

. Th

e p

roje

ct m

anag

em

en

t te

am a

lso

so

ug

ht

inp

ut

fro

m m

em

be

rs o

f th

e g

en

era

l pu

blic

an

d s

urr

ou

nd

ing

co

mm

un

itie

s in

tw

o p

ub

lic w

ork

sho

ps

ove

r th

e co

urs

e o

f th

e p

roje

ct.

Fig

ure

8 s

ho

ws

a ro

adm

ap o

f th

e p

lan

nin

g p

roce

ss.

CHAP

TER 0

2 | P

LANN

ING P

ROCE

SS

Fig

ure

8: P

lan

nin

g P

roce

ss R

oad

map

Page 36: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

9170

th-M

erlo

Corri

dor C

once

pt Pl

an

Init

ial R

ese

arch

an

d D

eve

lop

me

nt

of

Po

ten

tial

So

luti

on

s

In p

rep

arat

ion

fo

r th

e fi

rst

PA

C m

eet

ing

an

d p

ub

lic w

ork

sho

p, t

he

pro

ject

tea

m t

ho

rou

gh

ly a

nal

yze

d t

he

exis

tin

g c

on

dit

ion

s in

th

e co

rrid

or;

incl

ud

ing

tra

nsp

ort

atio

n a

nd

imm

ed

iate

ly a

dja

cen

t la

nd

u

se c

har

acte

rist

ics

as w

ell

as t

he

bro

ade

r tr

ansp

ort

atio

n n

etw

ork

co

nn

ect

ivit

y su

rro

un

din

g t

he

corr

ido

r. A

pp

en

dix

A in

clu

des

th

eco

mp

lete

Exi

stin

g C

on

dit

ion

s R

epo

rt a

nd

Ap

pe

nd

ix B

incl

ud

es t

he

Co

nn

ecti

vity

Rep

ort

. F

ind

ing

s fr

om

th

is w

ork

can

be

sum

mar

ize

d in

a n

um

be

r o

f ke

y o

pp

ort

un

itie

s an

d c

on

stra

ints

.

Op

po

rtu

nit

ies

and

Co

nst

rain

ts

Imp

lem

en

tati

on

of

the

des

ign

atio

ns

incl

ud

ed

in t

he

rece

nt

up

dat

e to

th

e Tr

ansp

ort

atio

n S

yste

m P

lan

will

fac

e so

me

chal

len

ges

in t

he

stu

dy

corr

ido

r, d

ue

to p

hysi

cal a

nd

, to

so

me

exte

nt,

po

licy

con

stra

ints

. H

ow

eve

r, im

pro

vem

en

ts in

th

e co

rrid

or

pre

sen

t an

op

po

rtu

nit

y to

im

pro

ve c

on

ne

ctio

ns

for

vari

ou

s m

od

es in

th

e st

ud

y ar

ea. T

his

se

ctio

n

ou

tlin

es t

he

op

po

rtu

nit

ies

and

co

nst

rain

ts t

hat

we

re c

on

sid

ere

d in

th

e d

eve

lop

me

nt

of

the

con

cep

tual

pla

n:

Urb

an /

Su

bu

rban

te

nsi

on

:T

he

corr

ido

r lie

s in

an

are

a in

tra

nsi

tio

n f

rom

a s

ub

urb

an/r

ura

l ch

arac

ter

to a

mo

re u

rban

on

e. T

he

re is

a t

en

sio

n b

etw

ee

n c

reat

ing

mo

re u

rban

-ty

pe

faci

litie

s in

th

e st

atio

n a

reas

, res

ide

nti

al a

reas

, an

d n

ear

sch

oo

ls

on

on

e h

and

an

d p

rovi

din

g a

hig

h-c

apac

ity

arte

rial

fo

r ve

hic

les

and

fr

eig

ht

on

th

e o

the

r. T

his

te

nsi

on

is a

lso

ap

par

en

t in

th

e d

iffe

ren

t so

urc

es

of

road

way

des

ign

gu

idan

ce, i

ncl

ud

ing

Am

eri

can

Ass

oci

atio

n o

f S

tate

H

igh

way

an

d T

ran

spo

rtat

ion

Offi

cia

l’s (

AA

SH

TO

) G

ree

n B

oo

k, N

ort

h

Am

eri

can

Cit

y Tr

ansp

ort

atio

n O

ffi c

ial’s

(N

AC

TO

) U

rban

Str

eet

s D

esig

n

Gu

ide

, an

d W

ash

ing

ton

Co

un

ty’s

Ro

adw

ay D

esig

n &

Co

nst

ruct

ion

S

tan

dar

ds.

Ho

wev

er,

this

te

nsi

on

an

d t

ran

siti

on

ing

ch

arac

ter

of

the

stu

dy

corr

ido

r p

rovi

de

an o

pp

ort

un

ity

to b

uild

on

th

e C

ou

nty

’s g

row

ing

m

ult

i-m

od

al s

yste

m a

nd

pro

vid

e an

exa

mp

le o

f d

esig

nin

g f

acili

ties

th

at

fulfi

ll m

ult

iple

pu

rpo

ses.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

ult

imat

ely

op

ted

to

ad

dre

ss t

his

te

nsi

on

by

usi

ng

a

low

er

des

ign

sp

ee

d f

or

veh

icle

s th

an is

typ

ical

ly u

sed

on

Co

un

ty

arte

rial

s. T

his

will

en

cou

rag

e lo

we

r ve

hic

le s

pe

ed

s to

en

han

ce t

he

env

iro

nm

en

t fo

r b

icyc

ling

an

d w

alki

ng

. Th

e p

lan

als

o in

clu

des

hig

h

qu

alit

y p

ed

estr

ian

an

d b

icyc

le f

acili

ties

wit

h s

ub

stan

tial

bu

ffe

rs

thro

ug

ho

ut

the

corr

ido

rs t

o a

llow

fo

r in

crea

sed

use

of

thes

e m

od

es.

Tran

spo

rtat

ion

Sys

tem

Pla

n d

esi

gn

atio

ns

and

th

e d

esi

gn

sta

nd

ard

s:T

he

Tran

spo

rtat

ion

Sys

tem

Pla

n d

esig

nat

es a

ll th

ree

seg

me

nts

of

the

corr

ido

r as

en

han

ced

maj

or

stre

et b

ikew

ays,

re

com

me

nd

ing

a b

uff

ere

d

bic

ycle

lan

e o

r cy

cle

trac

k o

n e

ach

. Fo

r se

gm

en

ts 2

an

d 3

, it

also

d

esig

nat

es t

he

faci

litie

s as

4-5

lan

e ar

teri

als.

In

ord

er

to f

ulfi

ll b

oth

of

thes

e d

esig

nat

ion

s, t

he

road

way

s w

ou

ld e

ith

er

req

uir

e ad

dit

ion

al r

igh

t-o

f-w

ay b

eyo

nd

th

e 9

8 f

eet

ind

icat

ed

in t

he

Sta

nd

ard

s, o

r th

ey w

ou

ld

ne

ed

to

co

nsi

de

r u

sin

g n

arro

we

r tr

ave

l lan

e w

idth

s th

an t

ho

se s

ho

wn

in

the

stan

dar

ds.

Ho

wev

er,

the

des

ign

sta

nd

ard

s cu

rre

ntl

y o

ffe

r fl

exib

ility

in

des

ign

wit

h t

he

des

ign

exc

ep

tio

n p

roce

ss.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

imp

lem

en

ts a

ll th

e Tr

ansp

ort

atio

n S

yste

m P

lan

d

esig

nat

ed

fac

iliti

es, i

ncl

ud

ing

cyc

le t

rack

s o

n s

eg

me

nts

2 a

nd

3, b

icyc

le

lan

es o

n s

eg

me

nt

1, fi

ve

-lan

e cr

oss

se

ctio

ns

on

se

gm

en

ts 2

an

d 3

, an

d

a th

ree

-lan

e cr

oss

se

ctio

n o

n s

eg

me

nt

1. T

o a

llow

th

e p

rop

ose

d c

ross

se

ctio

ns

to fi

t w

ith

in t

he

98

fe

et, t

he

con

cep

tual

pla

n p

rop

ose

s n

arro

we

r la

ne

wid

ths.

Multi

-fam

ily ho

using

on 17

0th A

venu

eFu

nctio

nal C

lass a

nd La

ne N

umbe

rs Ma

p fro

m Tr

ansp

orta

tion S

yste

m Pl

an

Page 37: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

10W

ashin

gton

Coun

ty, O

rego

n

Nar

row

ava

ilab

le r

igh

t-o

f-w

ay:

On

e o

f th

e p

rim

ary

chal

len

ges

in t

he

170

th A

ven

ue/

Me

rlo

Ro

ad c

orr

ido

r is

re

late

d t

o t

he

avai

lab

le r

igh

t-o

f-w

ay, w

hic

h r

ang

es t

hro

ug

ho

ut

the

corr

ido

r an

d t

he

thre

e se

gm

en

ts (

map

s sh

ow

ing

exi

stin

g r

igh

t-o

f-w

ay

can

be

fou

nd

in A

pp

en

dix

A).

No

ne

of

the

thre

e se

gm

en

ts h

as s

uffi

cie

nt

rig

ht-

of-

way

to

imp

lem

en

t th

e d

esig

nat

ion

s o

f th

e Tr

ansp

ort

atio

n

Sys

tem

Pla

n, a

nd

ob

tain

ing

ad

dit

ion

al r

igh

t-o

f-w

ay p

ose

s a

chal

len

ge

in t

erm

s o

f co

st. A

s n

ote

d in

th

e W

ash

ing

ton

Co

un

ty B

icyc

le F

acili

ty

Too

lkit

, in

ord

er

to im

ple

me

nt

the

en

han

ced

fac

iliti

es a

s in

dic

ate

d in

th

e Tr

ansp

ort

atio

n S

yste

m P

lan

, on

e o

f th

ree

op

tio

ns

will

ne

ed

to

be

sele

cte

d:

• In

crea

se t

he

ove

rall

wid

th o

f th

e ri

gh

t-o

f-w

ay b

eyo

nd

th

e cu

rre

nt

cro

ss s

ect

ion

s in

th

e W

ash

ing

ton

Co

un

ty R

oad

way

Des

ign

&

Co

nst

ruct

ion

Sta

nd

ard

s (s

tan

dar

ds

ou

tlin

ed in

Ap

pe

nd

ix A

)•

De

crea

se a

uto

mo

bile

tra

vel l

ane

wid

ths.

• R

ed

uce

th

e n

um

be

r o

f au

tom

ob

ile t

rave

l lan

es.

Co

nce

ptu

al P

lan

Ap

pro

ach

Wh

ile r

igh

t-o

f-w

ay a

cqu

isit

ion

will

be

ne

cess

ary

to c

on

stru

ct t

he

faci

litie

s, t

he

con

cep

tual

des

ign

use

s 11

-fo

ot

insi

de

veh

icle

tra

vel l

anes

an

d a

13

-fo

ot

cen

ter

turn

lan

e/m

ed

ian

to

ach

ieve

a c

ross

se

ctio

n t

hat

fi t

s w

ith

in t

he

tota

l wid

th o

f th

e cu

rre

nt

des

ign

sta

nd

ard

s. T

his

cro

ss s

ect

ion

is

co

nsi

ste

nt

wit

h m

ost

of

the

rig

ht-

of-

way

de

dic

atio

ns

that

hav

e al

read

y b

ee

n m

ade

alo

ng

th

e co

rrid

or

and

do

esn

’t c

han

ge

futu

re r

igh

t-o

f-w

ay

de

dic

atio

n r

eq

uir

em

en

ts a

lon

g t

he

maj

ori

ty o

f th

e co

rrid

or.

Nat

ura

l wat

er

feat

ure

s:

Se

gm

en

t 2

curr

en

tly

has

a t

wo

-lan

e b

rid

ge

cro

ssin

g B

eave

rto

n

Cre

ek

that

ru

ns

thro

ug

h T

ual

atin

Hill

s N

atu

re P

ark,

wit

h a

nu

mb

er

of

uti

lity

pip

es a

lso

cro

ssin

g a

lon

gsi

de

the

bri

dg

e. I

n o

rde

r to

mak

e an

y im

pro

vem

en

ts t

o s

eg

me

nt

2, i

ncl

ud

ing

wid

en

ing

or

add

ing

bic

ycle

or

pe

des

tria

n f

acili

ties

, th

e b

rid

ge

will

ne

ed

to

be

rep

lace

d a

nd

uti

litie

s re

loca

ted

. Im

pro

vin

g t

he

bri

dg

e in

se

gm

en

t 2

, ho

wev

er,

will

pro

vid

e th

e o

pp

ort

un

ity

to e

nh

ance

th

e ri

par

ian

co

rrid

or

con

ne

ctio

n o

f B

eave

rto

n

Cre

ek

bet

we

en

th

e Tu

alat

in H

ills

Nat

ure

Par

k an

d t

he

gre

en

way

to

th

e w

est.

Se

gm

en

t 1

also

has

a w

etla

nd

are

a ab

utt

ing

th

e co

rrid

or

ne

ar t

he

MA

X c

ross

ing

th

at m

ay c

om

plic

ate

the

add

itio

n o

f ri

gh

t-o

f-w

ay a

t th

is

pin

ch-p

oin

t.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al d

esig

n in

clu

des

re

pla

cin

g t

he

bri

dg

e an

d u

tilit

ies.

Wh

ile

the

pro

po

sed

co

nce

ptu

al d

esig

n d

oes

no

t g

o t

o t

he

leve

l of

det

ail t

hat

d

ete

rmin

es t

reat

me

nt

of

nat

ura

l fea

ture

s su

rro

un

din

g t

his

nat

ura

l are

a,

it d

oes

allo

w f

or

the

en

han

cem

en

t an

d p

rese

rvat

ion

of

this

nat

ura

l co

rrid

or.

Th

e d

esig

n a

nti

cip

ates

re

pai

rs a

nd

up

gra

des

of

the

sto

rmw

ate

r co

nvey

ance

sys

tem

, wit

h d

ete

nti

on

an

d t

reat

me

nt

for

all r

un

off

, an

d

des

ign

ates

fo

ur

loca

tio

ns

for

det

en

tio

n f

acili

ties

. Fu

rth

erm

ore

, th

e e

nvis

ion

ed

new

bri

dg

e p

rovi

des

th

e p

ote

nti

al f

or

a w

ide

r u

nd

er-

cro

ssin

g

to e

nh

ance

th

e ri

par

ian

co

rrid

or

and

po

ten

tial

ly p

rovi

de

a fu

ture

tra

il u

nd

er-

cro

ssin

g o

f 17

0th

Ave

nu

e. T

he

det

en

tio

n lo

cati

on

s an

d f

acili

ties

ar

e d

escr

ibed

in A

pp

en

dix

C.

Rai

l cro

ssin

gs:

T

he

MA

X li

ne

cro

sses

th

e co

rrid

or

in t

wo

pla

ces

– o

n s

eg

me

nt

1 an

d

seg

me

nt

3. O

n s

eg

me

nt

1, t

his

cro

ssin

g r

ep

rese

nts

th

e n

arro

wes

t p

oin

t in

th

e ri

gh

t-o

f-w

ay f

or

seg

me

nt

1, a

nd

cu

rre

ntl

y h

as n

o b

icyc

le f

acili

ties

. T

he

re is

a m

id-b

lock

cro

ssin

g w

ith

a r

ect

ang

ula

r ra

pid

fl a

shin

g b

eaco

n

(RR

FB

) th

at w

as r

ece

ntl

y co

nst

ruct

ed

to

th

e so

uth

of

the

ligh

t ra

il tr

acks

. Ho

wev

er,

the

pre

sen

ce o

f th

e M

AX

lin

e an

d t

he

stat

ion

s w

ith

in

the

stu

dy

area

pro

vid

e an

imm

en

se o

pp

ort

un

ity

to in

crea

se m

ult

i-m

od

al

mo

vem

en

t in

th

e st

ud

y co

rrid

or.

Pe

op

le t

rave

ling

to

an

d f

rom

th

e M

AX

st

atio

ns

can

alr

ead

y d

o s

o v

ia b

icyc

le o

r o

n f

oo

t; w

ith

en

han

ced

mu

lti-

mo

dal

fac

iliti

es, e

ven

mo

re w

ill b

e e

nco

ura

ge

d t

o d

o s

o. I

n a

dd

itio

n, b

us

serv

ice

is u

ltim

ate

ly p

lan

ne

d t

o r

un

on

se

gm

en

ts 2

an

d 3

, an

d t

his

will

ex

pan

d t

ran

sit

serv

ice

cove

rag

e in

th

e n

eig

hb

orh

oo

d t

o f

urt

he

r e

nab

le

resi

den

ts t

o m

ake

no

n-s

ing

le-o

ccu

pan

t-ve

hic

le m

od

e ch

oic

es.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

pro

vid

es h

igh

-qu

alit

y b

icyc

le a

nd

pe

des

tria

n

faci

litie

s an

d c

on

ne

ctio

ns

thro

ug

ho

ut

the

corr

ido

r, in

crea

sin

g t

he

abili

ty

of

pe

op

le t

o a

cces

s th

e M

AX

sta

tio

ns

safe

ly u

sin

g t

hes

e m

od

es o

f tr

ave

l. T

he

pla

n a

lso

des

ign

ates

po

ten

tial

fu

ture

en

han

ced

cro

ssin

g lo

cati

on

s,

par

ticu

larl

y at

bu

s st

op

s, t

o f

acili

tate

th

e sa

fe a

cces

s an

d u

se o

f th

e b

us

tran

sit

serv

ice

in t

he

corr

ido

r.

Utilit

ies on

170t

h Ave

nue b

ridge

over

Beav

erto

n Cre

ek.

Merlo

Road

MAX

Cros

sing.

Page 38: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

11170

th-M

erlo

Corri

dor C

once

pt Pl

an

Tual

atin

Hill

s N

atu

re P

ark

: C

urr

en

tly

the

par

k h

as m

any

old

tre

es g

row

ing

ad

jace

nt

to t

he

pro

pe

rty

line

, wit

h b

ran

ches

ove

rhan

gin

g t

he

sid

e o

f th

e ro

ad (

on

se

gm

en

t 2)

, cr

eati

ng

an

ap

pea

ling

aes

thet

ic, w

hic

h m

ay m

ake

it d

iffi

cult

to

wid

en

th

e ro

adw

ay t

o in

clu

de

the

faci

litie

s d

esig

nat

ed

in t

he

Tran

spo

rtat

ion

S

yste

m P

lan

. Als

o, t

he

par

k is

bo

un

de

d b

y a

tall

fen

ce, w

ith

on

ly t

wo

e

ntr

ance

s o

n t

he

wes

tern

sid

e o

f th

e p

ark,

an

d n

o m

arke

d c

ross

ing

ar

eas

to a

cces

s th

e p

ark

fro

m n

eig

hb

orh

oo

ds

to t

he

wes

t, d

ecr

easi

ng

it

s ac

cess

ibili

ty t

o t

he

resi

de

nts

. Ho

wev

er,

a re

des

ign

of

the

wal

kin

g

and

bic

yclin

g f

acili

ties

alo

ng

th

e st

ud

y co

rrid

or

has

th

e p

ote

nti

al

to s

ub

stan

tial

ly e

nh

ance

co

mm

un

ity

acce

ss t

o t

he

par

k, a

lrea

dy

an

imm

en

se a

sset

in t

he

com

mu

nit

y.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

do

es n

ot

req

uir

e ri

gh

t-o

f-w

ay a

cqu

isit

ion

fro

m

Tual

atin

Hill

s P

ark

and

Re

crea

tio

n D

istr

ict

(TH

PR

D);

ho

wev

er,

the

nat

ura

l fe

atu

res

of

the

par

k cu

rre

ntl

y ex

ten

d in

to t

he

Co

un

ty’s

rig

ht-

of-

way

. It

is

anti

cip

ate

d t

hat

so

me

tre

es w

ill b

e im

pac

ted

by

the

road

way

wid

en

ing

.

Th

e co

nce

ptu

al p

lan

pro

vid

es c

om

ple

te p

ed

estr

ian

an

d b

icyc

le f

acili

ties

as

we

ll as

po

ten

tial

cro

ssin

g lo

cati

on

s th

at w

ill in

crea

se e

ase

of

acce

ss t

o

the

par

k.

On

-str

ee

t b

icyc

le a

nd

pe

de

stri

an f

acili

ty c

on

ne

ctio

ns

wit

hre

gio

nal

tra

il n

etw

ork

: T

he

stu

dy

area

is s

urr

ou

nd

ed

by

Was

hin

gto

n C

ou

nty

’s e

xist

ing

an

d

pla

nn

ed

net

wo

rk o

f p

ave

d m

ult

i-u

se t

rails

, in

clu

din

g t

he

Wat

erh

ou

se

Trai

l, V

ine

Map

le T

rail,

Bea

vert

on

Cre

ek

Trai

l, an

d W

ests

ide

Trai

l. T

he

red

esig

n o

f th

e st

ud

y co

rrid

or

pre

sen

ts a

n o

pp

ort

un

ity

to p

rovi

de

add

ed

co

nn

ect

ivit

y to

th

ese

trai

ls a

nd

en

han

ce a

cces

s to

ad

jace

nt

lan

d u

ses

thro

ug

h p

rote

cte

d o

n-s

tre

et b

icyc

le a

nd

pe

des

tria

n f

acili

ties

.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e b

icyc

le a

nd

pe

des

tria

n f

acili

ties

in t

he

con

cep

tual

pla

n a

re d

esig

ne

d

to o

ffe

r th

e le

vel o

f co

mfo

rt a

nd

pro

tect

ion

th

at w

ill w

elc

om

e u

sers

of

vary

ing

leve

ls, s

imila

r to

th

e m

ult

i-u

se t

rail

net

wo

rk t

hat

su

rro

un

ds

the

stu

dy

area

. Th

e fa

cilit

ies

pro

po

sed

on

170

th A

ven

ue

and

Me

rlo

Ro

ad w

ill

add

co

nn

ect

ivit

y to

th

is n

etw

ork

.

SW

170

th A

ven

ue/

SW

Me

rlo

Ro

ad I

nte

rse

ctio

n:

Th

e S

W 1

70th

Ave

nu

e/S

W M

erl

o R

oad

inte

rse

ctio

n r

ep

rese

nts

a f

utu

re

chal

len

ge

and

an

op

po

rtu

nit

y. E

xist

ing

an

d f

ore

cast

ve

hic

ula

r tr

affi

c p

atte

rns

and

pla

ns

ind

icat

e th

at t

he

seg

me

nt

2 an

d s

eg

me

nt

3 p

ort

ion

s o

f th

e st

ud

y co

rrid

or

will

car

ry m

uch

of

the

no

rth

/so

uth

de

man

d. I

n

add

itio

n, p

ed

estr

ian

an

d b

icyc

list

de

man

d is

like

ly t

o in

crea

se m

ovi

ng

th

rou

gh

th

e in

ters

ect

ion

in a

ll d

ire

ctio

ns,

esp

eci

ally

co

nsi

de

rin

g t

he

incr

easi

ng

leve

ls o

f d

eve

lop

me

nt

in t

he

vici

nit

y. T

he

170

th A

ven

ue/

Me

rlo

R

oad

inte

rse

ctio

n w

ill n

ee

d t

o b

e th

ou

gh

tfu

lly d

esig

ne

d t

o p

rovi

de

en

han

ced

saf

ety

and

co

mfo

rtab

le m

ove

me

nt

of

all m

od

es t

hro

ug

h t

he

inte

rse

ctio

n. T

he

inte

rse

ctio

n p

rese

nts

th

e o

pp

ort

un

ity

to c

on

sid

er

inn

ova

tive

bic

ycle

cro

ssin

g t

reat

me

nts

, a r

ou

nd

abo

ut,

or

oth

er

po

ten

tial

d

esig

n id

eas.

Co

nce

ptu

al P

lan

Ap

pro

ach

Th

e co

nce

ptu

al p

lan

incl

ud

es t

wo

po

ten

tial

fu

ture

inte

rse

ctio

n d

esig

ns.

T

he

pre

ferr

ed

des

ign

is a

ro

un

dab

ou

t at

th

e 17

0th

Ave

nu

e/M

erl

o R

oad

in

ters

ect

ion

, des

ign

ed

wit

h f

ull

mu

lti-

mo

dal

fac

iliti

es. A

n a

lte

rnat

e in

ters

ect

ion

des

ign

is a

lso

incl

ud

ed

fo

r a

sig

nal

ize

d in

ters

ect

ion

at

170

th A

ven

ue/

Me

rlo

Ro

ad t

hat

incl

ud

es in

no

vati

ve t

reat

me

nts

fo

r th

e m

ove

me

nt

of

bic

yclis

ts.

Exist

ing in

form

al pe

destr

ian pa

th on

170t

h Ave

nue n

ear T

ualat

in Hi

lls N

atur

e Par

k.Dr

aft P

edes

trian

Map

from

Tran

spor

tatio

n Sys

tem

Plan

Pe

destr

ian cr

ossin

gs at

170t

h Ave

nue/

Merlo

Road

Page 39: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

01P

RO

JEC

T P

UR

PO

SE

AN

D C

ON

TE

XT

12W

ashin

gton

Coun

ty, O

rego

n

Dev

elo

pm

en

t o

f S

olu

tio

n A

lte

rnat

ive

s

Dra

win

g o

n t

his

kn

ow

led

ge

, th

e p

roje

ct t

eam

dev

elo

pe

d a

set

of

po

ssib

le s

olu

tio

ns

for

des

ign

of

the

mu

lti-

mo

dal

tra

nsp

ort

atio

n

faci

litie

s in

th

e co

rrid

or.

Eac

h o

f th

e p

oss

ible

so

luti

on

s re

lied

on

th

e Tr

ansp

ort

atio

n S

yste

m P

lan

des

ign

atio

ns

for

fun

ctio

nal

cla

ssifi

cati

on

an

d n

um

be

r o

f la

nes

. Th

ere

fore

, all

of

the

po

ten

tial

so

luti

on

s as

sum

ed

o

ne

veh

icle

tra

vel l

ane

in e

ach

dir

ect

ion

alo

ng

wit

h a

ce

nte

r tu

rn la

ne

for

the

no

rth

ern

se

gm

en

t o

f 17

0th

Ave

nu

e, a

nd

eac

h a

ssu

me

d t

wo

ve

hic

le

trav

el l

anes

in e

ach

dir

ect

ion

(an

d a

ce

nte

r tu

rn la

ne

or

me

dia

n) f

or

the

sou

the

rn s

eg

me

nt

of

170

th A

ven

ue

and

Me

rlo

Ro

ad.

Th

e p

rim

ary

dif

fere

nce

bet

we

en

th

e th

ree

po

ten

tial

so

luti

on

s is

in

ho

w t

hey

pro

vid

e fa

cilit

ies

for

bic

yclis

ts a

nd

pe

des

tria

ns.

Was

hin

gto

n

Co

un

ty a

nd

oth

er

juri

sdic

tio

ns

wit

hin

th

e P

ort

lan

d m

etro

po

litan

re

gio

n

hav

e re

lati

vely

hig

h le

vels

of

wal

kin

g a

nd

bic

yclin

g c

om

par

ed

to

oth

er

reg

ion

s in

th

e U

nit

ed

Sta

tes,

an

d t

his

re

gio

n h

as b

ee

n a

t th

e fo

refr

on

t o

f p

rovi

din

g in

no

vati

ve f

acili

ties

th

at a

llow

saf

e an

d c

om

fort

able

tra

vel f

or

thes

e m

od

es. W

ash

ing

ton

Co

un

ty h

as a

Bic

ycle

Fac

ility

Des

ign

To

olk

it

that

pro

vid

es g

uid

ance

on

bic

ycle

fac

ility

typ

es f

or

dif

fere

nt

con

text

, an

d t

he

pro

ject

tea

m d

rew

on

th

is g

uid

e an

d o

the

rs in

co

nsi

de

rin

g

des

ign

so

luti

on

s fo

r th

e 17

0th

Ave

nu

e an

d M

erl

o R

oad

co

rrid

ors

. A

nu

mb

er

of

po

ten

tial

des

ign

so

luti

on

s fo

r p

ed

estr

ian

an

d b

icyc

le f

acili

ties

ar

e sh

ow

n in

th

e fo

llow

ing

pag

es:

Oth

er

trea

tme

nts

co

nsi

de

red

, su

ch a

s cr

oss

ing

tre

atm

en

ts, t

ran

sit

sto

p

trea

tmen

ts, a

nd

gre

en s

tree

ts/s

torm

wat

er t

reat

men

ts, a

re o

utl

ined

in

Ap

pe

nd

ix D

th

e S

olu

tio

n A

lter

nat

ives

Mem

ora

nd

um

. Th

e th

ree

solu

tio

n

alte

rnat

ives

are

sh

ow

n in

th

e fo

llow

ing

pag

es.

Fac

iliti

es

Se

rvin

g P

ed

est

rian

s

Stand

ard S

idew

alkMu

lti-U

se Tr

ail

Inte

rim Sh

ould

erW

ider

Side

walk

Sta

nd

ard

Sid

ewal

k (5

fe

et)

S

idew

alks

are

th

e fu

nd

ame

nta

l bu

ildin

g b

lock

en

ablin

g c

om

fort

able

, co

nve

nie

nt

and

saf

e w

alki

ng

acc

ess

fro

m p

lace

to

pla

ce. T

hey

als

o

pro

vid

e an

imp

ort

ant

mea

ns

of

mo

bili

ty f

or

pe

op

le w

ith

dis

abili

ties

, fa

mili

es w

ith

str

olle

rs, a

nd

oth

ers

wh

o m

ay n

ot

be

able

to

tra

vel o

n

an u

nim

pro

ved

ro

adsi

de

surf

ace

. An

un

ob

stru

cte

d fi

ve

-fo

ot

sid

ewal

k p

rovi

des

th

e m

inim

um

wid

th n

ece

ssar

y to

pro

vid

e th

is f

un

ctio

nal

ity.

Wid

er

Sid

ewal

k (6

-20

fe

et)

Alr

ead

y in

use

alo

ng

par

ts o

f th

e co

rrid

or,

a w

ide

r si

dew

alk

allo

ws

for

com

fort

able

sid

e-b

y-si

de

wal

kin

g, w

ou

ld a

llow

tw

o p

eo

ple

in

wh

ee

lch

airs

to

pas

s ea

ch o

the

r, an

d p

rovi

des

sp

ace

for

oth

er

ele

me

nts

to

en

han

ce t

he

pe

des

tria

n r

eal

m, s

uch

as

stre

et f

urn

itu

re, s

ign

age

, art

in

stal

lati

on

s, b

uild

ing

fro

nta

ge

ele

me

nts

, an

d b

icyc

le p

arki

ng

. Wid

er

sid

ewal

ks a

re p

arti

cula

rly

app

rop

riat

e in

are

as o

f h

igh

pe

des

tria

n t

raffi

c,

com

me

rcia

l, o

r m

ixe

d u

se a

reas

.

Mu

lti-

Use

Tra

ilIn

so

me

loca

tio

ns,

a p

ave

d, b

i-d

ire

ctio

nal

mu

lti-

use

tra

il ca

n s

erv

e b

oth

p

ed

estr

ian

s an

d b

icyc

lists

fo

r a

low

er

cost

an

d u

sin

g le

ss r

igh

t-o

f-w

ay. A

m

inim

um

wid

th o

f 10

fe

et is

re

com

me

nd

ed

fo

r lo

w-p

ed

estr

ian

/bic

ycle

-tr

affi

c co

nte

xts;

12

feet

or

gre

ate

r sh

ou

ld b

e co

nsi

de

red

in a

reas

wit

h

mo

de

rate

to

hig

h le

vels

of

bic

ycle

an

d p

ed

estr

ian

tra

ffi c

du

e to

th

e p

ote

nti

al f

or

con

fl ic

ts b

etw

ee

n t

hes

e m

od

es. I

n t

hes

e ca

ses,

pav

em

en

t m

arki

ng

s ca

n b

e u

sed

to

se

par

ate

trai

l use

rs.

Inte

rim

Sh

ou

lde

r (6

fe

et)

A p

ave

d 6

-fo

ot

sho

uld

er

is o

fte

n u

sed

in r

ura

l are

as t

o p

rovi

de

a sp

ace

for

pe

des

tria

ns

and

bic

yclis

ts. I

n W

ash

ing

ton

Co

un

ty, d

esig

n s

tan

dar

ds

spe

cify

th

at a

6-f

oo

t sh

ou

lde

r is

ap

pro

pri

ate

as a

n in

teri

m t

reat

me

nt

on

u

rban

str

eet

s p

rio

r to

fu

ll co

nst

ruct

ion

of

the

road

way

.

Page 40: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

13170

th-M

erlo

Corri

dor C

once

pt Pl

an

Fac

iliti

es

Se

rvin

g B

icyc

lists

Stand

ard B

icycle

Lane

Buff e

red B

icycle

Lane

Two-

Way

Cycle

Trac

k

One-

Way

Cycle

Trac

k

Inte

rim Sh

ould

er

Multi

-Use

Trail

Sta

nd

ard

bic

ycle

lan

e (

6 f

ee

t)B

icyc

le la

nes

are

on

-str

eet

fac

iliti

es t

hat

pro

vid

e d

esig

nat

ed

sp

aces

fo

r b

icyc

les,

se

par

ate

d f

rom

ve

hic

les

by

pav

em

en

t m

arki

ng

s. B

icyc

le la

nes

ar

e g

en

era

lly u

sed

on

co

llect

or

and

art

eri

al s

tre

ets

wit

h v

eh

icu

lar

trav

el

volu

mes

an

d s

pe

ed

s th

at m

ake

it d

iffi

cult

fo

r d

rive

rs a

nd

bic

yclis

ts t

o

shar

e th

e ro

ad. A

bic

ycle

lan

e ca

n c

on

sist

of

8-i

nch

wh

ite

stri

pin

g w

ith

a

bic

ycle

sym

bo

l, an

d it

can

be

fi lle

d w

ith

a s

olid

pai

nt

colo

r, ty

pic

ally

g

ree

n t

o e

mp

has

ize

con

fl ic

t zo

nes

.

Bu

ffe

red

Bic

ycle

Lan

eB

uff

ere

d b

icyc

le la

nes

are

on

-str

eet

lan

es t

hat

incl

ud

e an

ad

dit

ion

al

stri

pe

d w

idth

of

typ

ical

ly 2

-3 f

eet

(“b

uff

er”

) b

etw

ee

n t

he

bic

ycle

lan

e an

d t

he

veh

icle

tra

vel l

ane

and

/or

the

veh

icle

par

kin

g la

ne

. Bu

ffe

red

b

icyc

le la

nes

can

be

par

ticu

larl

y ap

pro

pri

ate

on

str

eet

s w

ith

hig

h v

eh

icle

sp

ee

ds,

hig

h v

eh

icle

vo

lum

es, o

r re

lati

vely

fre

qu

en

t p

arki

ng

tu

rno

ver.

A b

uff

er

bet

we

en

par

kin

g a

nd

th

e b

icyc

le la

ne

can

he

lp d

ecr

ease

th

e ri

sk o

f b

icyc

lists

bei

ng

“d

oo

red

” w

he

n d

rive

rs o

pe

n t

hei

r d

oo

rs t

o e

xit

par

ked

ve

hic

les.

On

e-w

ay C

ycle

Tra

cks

Cyc

le t

rack

s, a

lso

kn

ow

n a

s se

par

ate

d b

icyc

le la

nes

or

pro

tect

ed

bic

ycle

la

nes

, are

exc

lusi

ve b

ikew

ays

loca

ted

wit

hin

or

dir

ect

ly a

dja

cen

t to

th

e ro

adw

ay, b

ut

phy

sica

lly s

ep

arat

ed

fro

m m

oto

r ve

hic

le t

raffi

c, p

arki

ng

la

nes

an

d s

idew

alks

. Phy

sica

l se

par

atio

n c

an b

e p

rovi

de

d b

y a

vari

ety

of

des

ign

ele

me

nts

, in

clu

din

g p

arke

d c

ars,

bo

llard

s, c

urb

s, s

urf

ace

mo

un

ted

tu

bu

lar

mar

kers

, or

pla

nte

rs. C

ycle

tra

cks

can

be

con

stru

cte

d

at s

tre

et-l

eve

l, si

dew

alk-

leve

l, o

r b

etw

ee

n t

he

two

.

Two

-way

Cyc

le T

rack

Two

-way

cyc

le t

rack

s, s

imila

r to

on

e-w

ay c

ycle

tra

cks,

are

als

o p

hysi

cally

se

par

ate

d f

rom

ve

hic

le la

nes

, par

kin

g la

nes

, an

d s

idew

alks

. Ho

wev

er,

they

car

ry b

i-d

ire

ctio

nal

bic

ycle

tra

vel,

and

th

ere

fore

are

ge

ne

rally

in

stal

led

on

on

ly o

ne

sid

e o

f th

e ro

adw

ay. T

wo

-way

cyc

le t

rack

s ar

e ap

plic

able

in s

itu

atio

ns

wh

en

rig

ht-

of-

way

is li

mit

ed

, dri

vew

ays

and

ac

cess

es a

re in

fre

qu

en

t, a

nd

/or

wh

en

co

nn

ect

ing

to

an

off

-str

eet

mu

lti-

use

tra

il.

Mu

lti-

Use

Tra

ilIn

so

me

loca

tio

ns,

a p

ave

d, b

i-d

ire

ctio

nal

mu

lti-

use

tra

il ca

n s

erv

e b

oth

p

ed

estr

ian

s an

d b

icyc

lists

fo

r a

low

er

cost

an

d u

sin

g le

ss r

igh

t-o

f-w

ay. A

m

inim

um

wid

th o

f 10

fe

et is

re

com

me

nd

ed

fo

r lo

w-p

ed

estr

ian

/bic

ycle

-tr

affi

c co

nte

xts;

12

feet

or

gre

ate

r sh

ou

ld b

e co

nsi

de

red

in a

reas

wit

h

mo

de

rate

to

hig

h le

vels

of

bic

ycle

an

d p

ed

estr

ian

tra

ffi c

du

e to

th

e p

ote

nti

al f

or

con

fl ic

ts b

etw

ee

n t

hes

e m

od

es. I

n t

hes

e ca

ses,

pav

em

en

t m

arki

ng

s ca

n b

e u

sed

to

se

par

ate

trai

l use

rs.

Inte

rim

Sh

ou

lde

r (6

fe

et)

A p

ave

d 6

-fo

ot

sho

uld

er

is o

fte

n u

sed

in r

ura

l are

as t

o p

rovi

de

a sp

ace

for

pe

des

tria

ns

and

bic

yclis

ts. I

n W

ash

ing

ton

Co

un

ty, d

esig

n s

tan

dar

ds

spe

cify

th

at a

6-f

oo

t sh

ou

lde

r is

ap

pro

pri

ate

as a

n in

teri

m t

reat

me

nt

on

u

rban

str

eet

s p

rio

r to

fu

ll co

nst

ruct

ion

of

the

road

way

.

Page 41: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

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ING

PR

OC

ES

S

14W

ashin

gton

Coun

ty, O

rego

n

A

C

B

SEGM

ENT 1

- AL

TERN

ATIVE

1A B

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SB

icyc

le L

ane

or

Bu

ffe

red

Bic

ycle

Lan

e

Mu

lti-

Use

Pat

h

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

- AL

TERN

ATIVE

1

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

ALTE

RNAT

IVE 1:

Mult

i-Use

Trail

Syste

m

CC

SEGM

ENT 3

- AL

TERN

ATIVE

1

Alt

ern

ativ

e 1

is f

ocu

sed

on

bu

ildin

g a

nd

co

nn

ect

ing

th

e m

ult

i-u

se

pat

h n

etw

ork

to

se

rve

bic

ycle

an

d p

ed

estr

ian

ne

ed

s. T

his

alt

ern

ativ

e in

clu

des

mu

lti-

use

pat

hs

on

bo

th s

ides

of

seg

me

nt

3 (

Me

rlo

Ro

ad),

e

nab

ling

pe

des

tria

ns

and

bic

yclis

ts t

o c

ho

ose

th

e si

de

of

the

road

th

at b

est

con

ne

cts

thei

r tr

ip b

ase

d o

n t

hei

r o

rig

in a

nd

des

tin

atio

n.

Th

e p

ath

on

th

e so

uth

sid

e o

f M

erl

o R

oad

wo

uld

min

imiz

e cr

oss

ing

s fo

r p

eo

ple

tra

velin

g o

n 1

58

th A

ven

ue

/ M

erl

o R

oad

/ 1

70th

Ave

nu

e.

Lik

ewis

e, u

sers

wo

uld

be

able

to

eas

ily c

on

ne

ct t

hei

r tr

ip f

rom

th

e W

ate

rho

use

Tra

il to

th

e p

lan

ne

d B

eave

rto

n C

ree

k Tr

ail u

sin

g t

he

mu

lti-

use

pat

h o

n t

he

no

rth

sid

e o

f M

erl

o R

oad

. Th

is o

pti

on

tak

es

adva

nta

ge

of

the

exis

tin

g c

ross

ing

loca

tio

n a

t th

e 15

8th

Ave

nu

e M

AX

sta

tio

n t

o c

on

ne

ct t

he

mu

lti-

use

pat

hs,

an

d p

rovi

des

a h

igh

le

vel o

f se

par

atio

n f

or

bic

yclis

ts o

f va

rio

us

leve

ls. O

n s

eg

me

nt

2,

Alt

ern

ativ

e 1

incl

ud

es a

mu

lti-

use

pat

h c

on

ne

ctio

n o

n t

he

east

sid

e o

f th

e ro

adw

ay a

s w

ell

as s

tan

dar

d o

r b

uff

ere

d o

n-s

tre

et b

icyc

le

lan

es t

o s

erv

e b

icyc

lists

mo

re c

om

fort

able

rid

ing

ad

jace

nt

to

mo

tor

veh

icle

tra

ffi c

. Se

gm

en

t 1

incl

ud

es o

n-s

tre

et b

icyc

le la

nes

. A

lte

rnat

ive

1 w

ou

ld r

eq

uir

e a

mu

lti-

use

pat

h c

ross

ing

at

170

th

Ave

nu

e/A

ug

ust

a L

ane

to c

on

ne

ct t

o t

he

Bea

vert

on

Cre

ek

Trai

l an

d

cro

ssin

gs

of

the

no

rth

an

d w

est

leg

s o

f th

e 17

0th

Ave

nu

e/M

erl

o

Ro

ad in

ters

ect

ion

.

1

3

2

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02P

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ING

PR

OC

ES

S

15170

th-M

erlo

Corri

dor C

once

pt Pl

an

SEGM

ENT 1

- AL

TERN

ATIVE

2

ALTE

RNAT

IVE 2:

One

-Way

Cycle

Trac

ks Al

ong B

oth S

ides

A B

A

B

B

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SO

ne

-way

Cyc

le T

rack

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

/3 -

ALTE

RNAT

IVE 2

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g m

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Alt

ern

ativ

e 2

pro

vid

es o

ne

-way

cyc

le t

rack

s an

d s

idew

alks

on

bo

th

sid

es a

lon

g e

ach

of

the

corr

ido

r se

gm

en

ts. T

he

full

sep

arat

ion

of

faci

litie

s (b

etw

ee

n m

oto

rize

d v

eh

icle

s, b

icyc

les,

an

d p

ed

estr

ian

s)

pro

vid

es e

ach

use

r ty

pe

wit

h c

lear

de

dic

ate

d s

pac

e. D

ep

en

din

g

on

th

e ty

pe

of

sep

arat

ion

fro

m m

oto

r ve

hic

le t

raffi

c, o

ne

-way

cy

cle

trac

ks c

an p

rovi

de

a le

vel o

f co

mfo

rt t

hat

att

ract

s a

wid

e ra

ng

e o

f b

icyc

le u

sers

. Th

is a

lte

rnat

ive

pro

vid

es b

icyc

le o

pe

rati

on

si

mila

r to

sta

nd

ard

bic

ycle

lan

es, a

nd

res

ult

s in

a c

on

fi g

ura

tio

n t

hat

m

eet

s d

rive

r an

d b

icyc

list

exp

ect

atio

n. I

n t

he

on

e-w

ay c

ycle

tra

ck

con

fi g

ura

tio

n, t

he

170

th A

ven

ue/

Me

rlo

Ro

ad in

ters

ect

ion

co

uld

in

clu

de

two

-sta

ge

left

-tu

rn b

icyc

le b

oxe

s to

fac

ilita

te b

icyc

le le

ft-

turn

mo

vem

en

ts. T

he

Me

rlo

Ro

ad/J

en

kin

s R

oad

inte

rse

ctio

n w

ou

ld

ne

ed

to

be

des

ign

ed

to

allo

w s

ou

thb

ou

nd

bic

yclis

ts o

n t

he

Wes

tsid

e Tr

ail (

on

th

e ea

st s

ide

of

158

th A

ven

ue)

to

cro

ss o

ver

to t

he

trai

l, o

r so

uth

bo

un

d c

ycle

tra

ck, o

n t

he

wes

t an

d n

ort

h s

ide

of

Me

rlo

Ro

ad.

Alt

ern

ativ

e 2

wo

uld

als

o r

eq

uir

e th

e d

esig

n o

f a

cro

ssin

g o

r le

ft t

urn

tr

eatm

en

t at

170

th A

ven

ue/

Au

gu

sta

Lan

e fo

r n

ort

hb

ou

nd

bic

yclis

ts

to c

on

ne

ct t

o t

he

futu

re B

eave

rto

n C

ree

k Tr

ail.

1

3

2

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02P

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ING

PR

OC

ES

S

16W

ashin

gton

Coun

ty, O

rego

n

170th

SEGM

ENT 1

- AL

TERN

ATIVE

3

ALTE

RNAT

IVE 3:

Two-

Way

Cycle

Trac

ks

A B

A

B

B

170th

SEGM

ENT 2

/3 -

ALTE

RNAT

IVE 3

POTE

NTIA

L COR

RIDO

R FAC

ILITIE

SB

icyc

le L

ane

or

Bu

ffe

red

Bic

ycle

Lan

e

Two

-Way

Cyc

le T

rack

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Alt

ern

ativ

e 3

pro

po

ses

two

-way

cyc

le t

rack

s an

d s

idew

alks

to

co

nn

ect

th

e p

lan

ne

d a

nd

exi

stin

g m

ult

i-u

se p

ath

net

wo

rk. 1

70th

A

ven

ue

sou

th o

f M

erl

o R

oad

(se

gm

en

t 2)

has

a t

wo

-way

cyc

le

trac

k o

n it

s ea

st s

ide

adja

cen

t to

th

e Tu

alat

in H

ills

Nat

ure

Par

k.

Th

is c

ycle

tra

ck c

on

ne

cts

wit

h a

no

the

r tw

o-w

ay c

ycle

tra

ck o

n

the

sou

th s

ide

of

Me

rlo

Ro

ad, w

hic

h p

rovi

des

co

nn

ect

ion

s to

th

e W

ests

ide

and

Wat

erh

ou

se T

rails

. Th

is t

wo

-way

cyc

le t

rack

wo

uld

p

rovi

de

a p

rote

cte

d o

n-s

tre

et c

on

ne

ctio

n f

or

the

Wes

tsid

e Tr

ail

that

wo

uld

allo

w u

sers

to

avo

id c

ross

ing

th

e M

erl

o R

oad

/15

8th

A

ven

ue

inte

rse

ctio

n t

wic

e. A

lte

rnat

ive

3 in

clu

des

sta

nd

ard

or

bu

ffe

red

bic

ycle

lan

es o

n t

he

op

po

site

sid

e o

f th

e ro

adw

ay t

o s

erv

e b

icyc

lists

rid

ing

at

a h

igh

er

spe

ed

an

d w

ho

are

mo

re c

om

fort

able

ri

din

g a

dja

cen

t to

mo

tor

veh

icle

tra

ffi c

. Th

e b

icyc

le-s

pe

cifi

c d

esig

n

ele

me

nts

of

the

170

th A

ven

ue/

Me

rlo

Ro

ad in

ters

ect

ion

will

var

y d

ep

en

din

g o

n t

he

inte

rse

ctio

n c

on

fi g

ura

tio

n s

ele

cte

d, b

ut

cou

ld

incl

ud

e b

icyc

le s

ign

als

or

two

-sta

ge

left

-tu

rn b

icyc

le b

oxe

s. In

ad

dit

ion

, Alt

ern

ativ

e 3

wo

uld

re

qu

ire

a b

icyc

le c

ross

ing

at

the

170

th

Ave

nu

e/A

ug

ust

a L

ane

inte

rse

ctio

n in

ord

er

to p

rovi

de

a co

nn

ect

ion

to

th

e p

lan

ne

d B

eave

rto

n C

ree

k Tr

ail.

1

3

2

Page 44: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

17170

th-M

erlo

Corri

dor C

once

pt Pl

an

Mu

lti-

use

Tra

il S

yste

m (

Alt

ern

ativ

e 1

)O

ne

-way

Cyc

le T

rack

s al

on

g B

oth

Sid

es

(Alt

ern

ativ

e 2

)Tw

o-w

ay C

ycle

Tra

cks

(Alt

ern

ativ

e 3

)

Ad

van

tag

es

• P

rovi

de

s h

igh

leve

l of

con

ne

ctiv

ity

for

exis

tin

g a

nd

pla

nn

ed

m

ult

i-u

se p

ath

sys

tem

in v

icin

ity,

bo

th n

ort

h a

nd

so

uth

of

Me

rlo

R

oad

.•

Pro

vid

es

hig

h le

vel o

f se

par

atio

n b

etw

ee

n b

icyc

les

and

mo

tor

veh

icle

s, w

hic

h c

an a

ttra

ct b

icyc

lists

of

vari

ou

s le

vels

.•

Pro

vid

es

a fa

cilit

y o

n t

he

we

st s

ide

of

170

th A

ven

ue

in f

ron

t o

f B

eav

er

Acr

es

Ele

me

nta

ry S

cho

ol.

• S

ep

arat

e sp

ace

for

eac

h u

ser

typ

e (p

ed

est

rian

, bic

ycle

, mo

tor

veh

icle

), w

hic

h c

an p

rovi

de

a h

igh

leve

l of

com

fort

fo

r a

ran

ge

of

bo

th b

icyc

lists

an

d p

ed

est

rian

s.•

Op

era

tio

nal

ly s

imila

r to

sta

nd

ard

bic

ycle

lan

es,

me

etin

g d

rive

r ex

pe

ctat

ion

s.•

Inte

rse

ctio

n d

esi

gn

can

pro

vid

e o

pti

on

fo

r tw

o-s

tag

e tu

rnin

g

mo

vem

en

ts a

nd

/or

for

“ear

ly e

xit”

of

the

cycl

e tr

ack

to p

osi

tio

n f

or

turn

s.

• O

ffe

rs t

he

po

ten

tial

to

co

nn

ect

pla

nn

ed

an

d e

xist

ing

mu

lti-

use

pat

hs

via

an o

n-s

tre

et p

rote

cte

d t

wo

-way

fac

ility

.•

May

re

qu

ire

less

rig

ht-

of-

way

wid

th t

han

on

e-w

ay c

ycle

tra

cks,

du

e to

th

e n

ee

d f

or

on

ly o

ne

bu

ffe

r b

etw

ee

n t

he

cycl

e tr

ack

and

mo

tor

veh

icle

tra

vel l

ane

s.

Dis

adva

nta

ge

s•

Do

es

no

t p

rovi

de

sep

arat

e d

ed

icat

ed

fac

iliti

es

for

pe

de

stri

ans

and

bic

yclis

ts, b

ut

com

bin

es

the

m o

n m

ult

i-u

se p

ath

s. A

t m

od

era

te-t

o-h

igh

vo

lum

es,

po

ten

tial

co

nfl

icts

an

d d

ela

y fo

r u

sers

may

re

sult

.•

Mo

re c

on

fi d

en

t co

mm

ute

r cy

clis

ts m

ay p

refe

r o

n-s

tre

et f

acili

tie

s,

wh

ere

th

ey c

an t

rave

l at

hig

he

r sp

ee

ds

and

hav

e th

e o

pti

on

to

m

ake

turn

ing

mo

vem

en

ts a

s m

oto

r ve

hic

les

do

(as

op

po

sed

to

a

two

-sta

ge

turn

, wh

ich

intr

od

uce

s m

ore

de

lay)

.

• M

ay r

eq

uir

e th

e m

ost

wid

th, d

ue

to p

rovi

din

g a

bu

ffe

r fr

om

mo

tor

veh

icle

tra

ffi c

on

bo

th s

ides

of

the

road

way

.•

May

be

the

mo

st d

iffi

cult

fac

ility

to

pro

vid

e in

a p

has

ed

im

ple

me

nta

tio

n w

ith

ou

t th

e n

ee

d t

o r

eco

nst

ruct

.

• Tw

o-w

ay c

ycle

tra

cks

req

uir

e o

ne

dir

ect

ion

of

bic

ycle

tra

vel i

n a

d

ire

ctio

n c

ou

nte

r to

mo

tor

veh

icle

tra

ffi c

, wh

ich

mo

tori

sts

may

no

t ex

pe

ct (

at le

ast

init

ially

). I

nte

rse

ctio

n t

urn

ing

mo

vem

en

ts m

ust

be

care

fully

co

ntr

olle

d t

o e

nsu

re s

afe

cro

ssin

gs

for

bo

th d

ire

ctio

ns

of

trav

el.

• A

t tr

ansi

tio

ns

bet

we

en

tw

o-w

ay c

ycle

tra

cks

and

bic

ycle

lan

es,

b

icyc

lists

may

ne

ed

to

mak

e a

two

-sta

ge

or

dia

go

nal

cro

ssin

g o

f an

in

ters

ect

ion

, po

ten

tial

ly in

tro

du

cin

g m

ore

de

lay.

No

rth

170

th

Ave

nu

e(S

eg

me

nt

1)

Co

nsi

de

rati

on

s

A m

ult

i-u

se t

rail

cou

ld b

e co

nsi

de

red

fo

r se

gm

en

t 1,

bu

t is

no

t p

rop

ose

d f

or

seve

ral r

eas

on

s. N

ort

h o

f B

ase

line

, 170

th h

as b

icyc

le

lan

es

on

bo

th s

ide

s o

f th

e ro

ad, s

o t

he

mu

lti-

use

pat

h w

ou

ld n

ee

d

to t

ran

siti

on

. A m

ult

i-u

se p

ath

on

se

gm

en

t 1

wo

uld

no

t su

bst

anti

ally

e

nh

ance

co

nn

ect

ivit

y o

f th

e tr

ails

net

wo

rk. I

nst

ead

, sta

nd

ard

or

bu

ffe

red

bic

ycle

lan

es

are

incl

ud

ed

fo

r se

gm

en

t 1,

wit

h c

ross

ing

tr

eat

me

nts

pro

vid

ed

at

170

th A

ven

ue/

Me

rlo

Ro

ad t

o t

ran

siti

on

fro

m

mu

lti-

use

pat

hs

to t

he

bic

ycle

lan

es.

On

se

gm

en

t 1,

wh

ich

has

low

er

traf

fi c

volu

me

s th

an s

eg

me

nts

2 a

nd

3,

on

e-w

ay c

ycle

tra

cks

cou

ld b

e d

esi

gn

ed

wit

h a

ve

rtic

al s

ep

arat

ion

fro

m

trav

el l

ane

s (a

t a

leve

l bet

we

en

sid

ewal

k an

d r

oad

way

leve

l) t

o p

rovi

de

sep

arat

ion

wit

ho

ut

add

ing

th

e w

idth

of

a h

ori

zon

tal b

uff

er.

A t

wo

-way

cyc

le t

rack

co

uld

be

con

sid

ere

d f

or

seg

me

nt

1, b

ut

is n

ot

pro

po

sed

fo

r se

vera

l re

aso

ns.

No

rth

of

Bas

elin

e, 1

70th

Ave

nu

e h

as

bic

ycle

lan

es

on

bo

th s

ide

s o

f th

e ro

ad, s

o t

he

two

-way

cyc

le t

rack

w

ou

ld n

ee

d t

o t

ran

siti

on

to

fac

iliti

es

on

eac

h s

ide

of

the

road

. A t

wo

-w

ay c

ycle

tra

ck o

n s

eg

me

nt

1 w

ou

ld n

ot

pro

vid

e a

con

ne

ctio

n b

etw

ee

n

exis

tin

g o

r p

lan

ne

d m

ult

i-u

se p

ath

s (a

s it

wo

uld

in s

eg

me

nt

3).

In

ste

ad,

stan

dar

d o

r b

uff

ere

d b

icyc

le la

ne

s ar

e in

clu

de

d f

or

seg

me

nt

1, w

ith

cr

oss

ing

tre

atm

en

ts p

rovi

de

d a

t 17

0th

Ave

nu

e/M

erl

o R

oad

to

tra

nsi

tio

n

fro

m t

he

two

-way

cyc

le t

rack

s to

th

e b

icyc

le la

ne

s.

So

uth

170

th

Ave

nu

e(S

eg

me

nt

2)

Co

nsi

de

rati

on

s

Alt

ern

ativ

e 1

cou

ld a

lso

be

de

sig

ne

d w

ith

th

e m

ult

i-u

se p

ath

on

th

e w

est

sid

e o

f se

gm

en

t 2

, ad

jace

nt

to t

he

resi

de

nti

al n

eig

hb

orh

oo

ds

to

pro

vid

e a

con

ne

ctio

n f

rom

th

e n

eig

hb

orh

oo

ds

to t

he

Be

ave

r C

ree

k E

lem

en

tary

Sch

oo

l wit

ho

ut

cro

ssin

g 1

70th

Ave

nu

e. H

ow

eve

r, a

mu

lti-

use

pat

h o

n t

he

eas

t si

de

wo

uld

intr

od

uce

nu

me

rou

s si

de

-str

eet

cr

oss

ing

s. A

lign

ing

th

e p

ath

on

th

e e

ast

sid

e p

rovi

de

s a

con

ne

ctio

n

to t

he

Tual

atin

Hill

s N

atu

re P

ark

and

has

a li

mit

ed

nu

mb

er

of

sid

e-

stre

et c

ross

ing

s. T

he

add

itio

n o

r o

ne

or

two

sta

nd

ard

bic

ycle

lan

es

cou

ld p

rovi

de

an o

pti

on

fo

r m

ore

co

nfi

de

nt

cycl

ists

se

eki

ng

to

tra

vel

fast

er

than

wo

uld

be

safe

on

a m

ult

i-u

se p

ath

.

On

e-w

ay c

ycle

tra

cks

wo

uld

ne

ed

to

be

de

sig

ne

d t

o p

rovi

de

suffi

cie

nt

op

po

rtu

nit

ies

for

bic

yclis

ts t

o c

ross

170

th A

ven

ue

or

mak

e le

ft t

urn

m

ove

me

nts

(e

.g. t

urn

s in

to t

he

ne

igh

bo

rho

od

s fo

r n

ort

hb

ou

nd

b

icyc

lists

).

Alt

ern

ativ

e 3

co

uld

als

o b

e d

esi

gn

ed

wit

h t

he

two

-way

cyc

le t

rack

on

th

e w

est

sid

e o

f se

gm

en

t 2

, ad

jace

nt

to t

he

resi

de

nti

al n

eig

hb

orh

oo

ds

to p

rovi

de

a co

nn

ect

ion

fro

m t

he

ne

igh

bo

rho

od

s to

th

e B

eav

er

Cre

ek

Ele

me

nta

ry S

cho

ol w

ith

ou

t cr

oss

ing

170

th A

ven

ue

. Ho

wev

er,

a cy

cle

trac

k o

n t

he

we

st s

ide

wo

uld

intr

od

uce

nu

me

rou

s si

de

-str

eet

cro

ssin

gs.

A

lign

ing

th

e cy

cle

trac

k o

n t

he

eas

t si

de

pro

vid

es

a co

nn

ect

ion

to

th

e Tu

alat

in H

ills

Nat

ure

Par

k an

d h

as a

lim

ite

d n

um

be

r o

f si

de

-str

eet

cr

oss

ing

s. T

he

add

itio

n o

r o

ne

or

two

sta

nd

ard

bic

ycle

lan

es

cou

ld

pro

vid

e an

op

tio

n f

or

mo

re c

on

fi d

en

t cy

clis

ts s

ee

kin

g t

o t

rave

l fas

ter

than

wo

uld

be

safe

on

a t

wo

-way

cyc

le t

rack

.

Me

rlo

Ro

ad

(Se

gm

en

t 3

) C

on

sid

era

tio

ns

Se

gm

en

t 3

co

uld

be

con

stru

cte

d w

ith

a m

ult

i-u

se p

ath

on

th

e n

ort

h

sid

e, t

he

sou

th s

ide

, or

on

bo

th s

ide

s. P

ath

s o

n b

oth

sid

es

pro

vid

e th

e h

igh

est

leve

l of

con

ne

ctiv

ity

bet

we

en

oth

er

mu

lti-

use

pat

hs,

b

ut

wo

uld

re

qu

ire

way

-fi n

din

g s

ign

age

to h

elp

new

use

rs fi

nd

th

eir

d

est

inat

ion

s.

In o

rde

r to

pro

vid

e a

hig

h q

ual

ity

con

ne

ctio

n f

or

vari

ou

s le

vels

of

bic

yclis

ts b

etw

ee

n t

he

pla

nn

ed

an

d e

xist

ing

mu

lti-

use

pat

hs,

on

e-

way

cyc

le t

rack

s o

n M

erl

o R

oad

wo

uld

ne

ed

to

be

des

ign

ed

wit

h a

su

bst

anti

al le

vel o

f se

par

atio

n f

rom

mo

tor

veh

icle

tra

ffi c

.

A t

wo

-way

cyc

le t

rack

in s

eg

me

nt

3 c

ou

ld p

rovi

de

a co

nti

nu

ou

s co

nn

ect

ion

bet

we

en

th

e m

ult

i-u

se p

ath

s o

n t

he

eas

t e

nd

of

the

seg

me

nt

and

th

e p

lan

ne

d m

ult

i-u

se p

ath

co

nn

ect

ion

to

th

e w

est

of

170

th A

ven

ue

. T

he

add

itio

n o

f a

stan

dar

d b

icyc

le la

ne

on

th

e o

the

r si

de

of

the

stre

et

wo

uld

allo

w m

ore

co

nfi

de

nt

we

stb

ou

nd

cyc

lists

to

min

imiz

e th

eir

ne

ed

to

cro

ss M

erl

o R

oad

to

acc

ess

th

e fa

cilit

y.

Ph

asin

g

Op

tio

ns

Pro

vid

ing

bic

ycle

fac

iliti

es

on

on

e si

de

of

the

road

way

cre

ate

s p

has

ing

op

tio

ns

in w

hic

h o

ne

sid

e o

f th

e ro

ad c

ou

ld b

e in

itia

lly

con

stru

cte

d, w

ith

tw

o t

rave

l lan

es

add

ed

to

th

e o

the

r si

de

in t

he

ult

imat

e p

has

e.

Wit

h o

ne

-way

cyc

le t

rack

s, p

has

ing

wo

uld

be

mo

re d

iffi

cult

, sin

ce t

he

ult

imat

e lo

cati

on

of

the

faci

litie

s w

ou

ld n

ee

d t

o a

cco

mm

od

ate

the

full

wid

th o

f th

e 5

-lan

e ro

adw

ay b

etw

ee

n t

he

m. I

n a

n in

teri

m p

has

e,

bo

th c

ycle

tra

cks

cou

ld b

e p

rovi

de

d, w

ith

on

e la

ter

rem

ove

d w

he

n t

he

road

way

is w

ide

ne

d; o

r, o

ne

cycl

e tr

ack

cou

ld b

e co

nst

ruct

ed

on

on

e si

de

, wit

h a

n in

teri

m 6

-fo

ot

sho

uld

er

pro

vid

ed

on

th

e o

the

r si

de

.

Pro

vid

ing

bic

ycle

fac

iliti

es

on

on

e si

de

of

the

road

way

cre

ate

s p

has

ing

o

pti

on

s in

wh

ich

on

e si

de

of

the

road

co

uld

be

init

ially

co

nst

ruct

ed

, wit

h

two

tra

vel l

ane

s ad

de

d t

o t

he

oth

er

sid

e in

th

e u

ltim

ate

ph

ase

.

So

luti

on

Alt

ern

ativ

e 1

is f

ocu

sed

on

bu

ildin

g a

nd

co

nn

ect

ing

th

e m

ult

i-u

se p

ath

net

wo

rk, i

ncl

ud

ing

pat

hs

on

bo

th s

ides

of

Me

rlo

R

oad

.

So

luti

on

Alt

ern

ativ

e 2

pro

vid

es o

ne

-way

cyc

le t

rack

s an

d s

idew

alks

o

n b

oth

sid

es o

f th

e ro

adw

ays

thro

ug

ho

ut

the

corr

ido

r.S

olu

tio

n A

lte

rnat

ive

3 u

ses

a co

mb

inat

ion

of

two

-way

cyc

le t

rack

s,

bic

ycle

lan

es, a

nd

sid

ewal

ks.

So

luti

on

Alt

ern

ativ

es

Co

mp

aris

on

Page 45: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

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ING

PR

OC

ES

S

18W

ashin

gton

Coun

ty, O

rego

n

Fir

st R

ou

nd

of

Me

etin

gs

and

Pu

blic

Ou

tre

ach

In N

ove

mb

er

2014

, th

e p

roje

ct t

eam

met

wit

h t

he

PA

C

and

he

ld a

pu

blic

wo

rksh

op

to

get

inp

ut

and

fe

ed

bac

k o

n

the

vari

ou

s fa

cilit

y ty

pes

an

d s

olu

tio

n a

lte

rnat

ives

. PA

C

me

mb

ers

an

d a

tte

nd

ees

of

the

pu

blic

wo

rksh

op

co

nsi

de

red

a

vari

ety

of

bic

ycle

an

d p

ed

estr

ian

fac

ility

typ

es f

or

each

of

the

thre

e co

rrid

or

seg

me

nts

.

Se

gm

en

t 1

(170

th A

ve N

ort

h)S

eg

me

nt

2(1

70th

Ave

So

uth

)S

eg

me

nt

3(M

erl

o R

d)

Pe

de

stri

ans

Sta

nd

ard

Sid

ewal

k1

1

Wid

er S

idew

alk

61

3

Mu

lti-

Use

Tra

il3

73

Inte

rim

Sh

ou

lde

r1

Bic

ycle

s

Sta

nd

ard

Bic

ycle

Lan

e3

11

Bu

ffe

red

Bic

ycle

Lan

e2

22

On

e-w

ay C

ycle

Tra

ck1

01

Two

-way

Cyc

le T

rack

00

0

Mu

lti-

Use

Tra

il3

53

Inte

rim

Sh

ou

lde

r0

00

PA

C M

eet

ing

#1

Fac

ility

Typ

e E

xerc

ise

Re

sult

s

Su

mm

ary

of

Inp

ut

Pe

de

stri

ans

As

sho

wn

in t

he

tab

le (

at r

igh

t), r

esp

on

ses

ind

icat

e st

ron

g

con

sen

sus

that

th

e e

nti

re c

orr

ido

r w

arra

nts

mo

re t

han

st

and

ard

wid

th s

idew

alks

an

d t

hat

se

gm

en

t 2

has

th

e m

ost

n

ee

d f

or

bu

ffe

r fo

r p

ed

estr

ian

s fr

om

th

e ve

hic

le t

rave

l lan

es.

Bic

ycle

s T

he

stro

ng

est

sup

po

rt f

or

mu

lti-

use

tra

ils w

as f

or

app

licat

ion

o

n s

eg

me

nt

2.

Mu

lti-

use

tra

ils h

ad e

qu

al s

up

po

rt t

o b

uff

ere

d b

icyc

le la

nes

an

d o

ne

-way

cyc

le t

rack

s co

mb

ine

d f

or

seg

me

nts

1 a

nd

3,

ind

icat

ing

a s

plit

fo

r th

ese

seg

me

nts

bet

we

en

an

on

-str

eet

o

r o

ff-s

tre

et (

mu

lti-

use

tra

il) f

acili

ty.

Se

gm

en

t 1

was

th

e o

nly

se

gm

en

t w

ith

mo

re t

han

on

e vo

te

for

a st

and

ard

bic

ycle

lan

e, i

nd

icat

ing

th

at s

om

e p

eo

ple

fe

el

stan

dar

d b

icyc

le la

nes

(la

rge

ly e

xist

ing

in t

his

se

gm

en

t) a

re

ade

qu

ate

.

Co

rrid

or

Se

gm

en

ts

1

3

2

Publ

ic W

orks

hop #

1

Page 46: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

NN

ING

PR

OC

ES

S

19170

th-M

erlo

Corri

dor C

once

pt Pl

an

Publ

ic W

orks

hop #

1

Se

gm

en

t 1

(170

th A

ve N

ort

h)S

eg

me

nt

2(1

70th

Ave

So

uth

)S

eg

me

nt

3(M

erl

o R

d)

Pe

de

stri

ans

Sta

nd

ard

Sid

ewal

k1

113

Wid

er S

idew

alk

26

2

Mu

lti-

Use

Tra

il6

156

Inte

rim

Sh

ou

lde

r1

Bic

ycle

s

Sta

nd

ard

Bic

ycle

Lan

e2

42

Bu

ffe

red

Bic

ycle

Lan

e0

1110

On

e-w

ay C

ycle

Tra

ck3

51

Two

-way

Cyc

le T

rack

12

0

Mu

lti-

Use

Tra

il5

62

Pu

blic

Wo

rksh

op

#1

Fac

ility

Typ

e E

xerc

ise

Re

sult

sS

um

mar

y o

f In

pu

t

Pe

de

stri

ans

As

sho

wn

in t

he

tab

le (

at le

ft),

mo

re v

ote

s w

ere

cas

t fo

r fa

cilit

y ty

pes

in s

eg

me

nt

2 th

an o

the

r se

gm

en

ts. T

his

in

dic

ates

th

at s

om

e p

eo

ple

on

ly v

ote

d f

or

seg

me

nt

2,

wh

ich

may

ind

icat

e it

is t

hei

r m

ain

co

nce

rn in

th

e co

rrid

or.

So

me

par

tici

pan

ts w

ou

ld li

ke t

o h

ave

mu

lti-

use

tra

ils o

n a

ll se

gm

en

ts.

Be

cau

se m

ult

i-u

se t

rail

was

no

t a

stro

ng

pre

fere

nce

fo

r b

icyc

ling

tre

atm

en

ts (

see

be

low

), t

he

pe

des

tria

n r

esu

lts

for

mu

lti-

use

tra

il m

ay in

dic

ate

a d

esir

e fo

r p

ed

estr

ian

s to

hav

e se

par

atio

n f

rom

tra

ffi c

.

Bic

ycle

s M

ore

vo

tes

we

re c

ast

for

faci

lity

typ

es in

se

gm

en

t 2

than

o

the

r se

gm

en

ts. T

his

ind

icat

es t

hat

so

me

par

tici

pan

ts o

nly

vo

ted

fo

r se

gm

en

t 2

, wh

ich

may

ind

icat

e it

is t

hei

r m

ain

co

nce

rn in

th

e co

rrid

or.

Se

gm

en

t 3

res

po

nd

ers

had

a s

tro

ng

pre

fere

nce

fo

r b

uff

ere

d

bic

ycle

lan

es.

Res

po

nse

s o

n s

eg

me

nt

2 a

lso

sh

ow

ed

a

stro

ng

pre

fere

nce

fo

r b

uff

ere

d b

icyc

le la

nes

alo

ng

wit

h

som

e su

pp

ort

fo

r o

ne

-way

cyc

le t

rack

s an

d m

ult

i-u

se t

rails

. T

he

com

bin

atio

n o

f re

spo

nse

s fo

r b

uff

ere

d b

icyc

le la

nes

an

d o

ne

-way

cyc

le t

rack

s sh

ow

s a

stro

ng

pre

fere

nce

fo

r fa

cilit

ies

sep

arat

e fr

om

pe

des

tria

ns

and

no

t se

t-b

ack

fro

m

the

road

way

.

Publ

ic W

orks

hop #

1

Page 47: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

02P

LA

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ING

PR

OC

ES

S

20

Was

hingt

on Co

unty

, Ore

gon

Publ

ic W

orks

hop #

1

Alt

ern

ativ

e 1

(E

xpan

de

d

Mu

lti-

Use

Sys

tem

)

Alt

ern

ativ

e 2

(O

ne

-way

C

ycle

Tra

cks)

Alt

ern

ativ

e 3

(T

wo

-Way

C

ycle

Tra

cks)

1st

Ch

oic

e V

ote

s6

168

2nd

Ch

oic

e V

ote

s7

155

Pu

blic

Wo

rksh

op

#1

Co

rrid

or

Alt

ern

ativ

e E

xerc

ise

Re

sult

sM

em

be

rs o

f th

e p

ub

lic a

lso

pro

vid

ed

inp

ut

on

th

e th

ree

solu

tio

n

alte

rnat

ives

. Pe

op

le w

ere

ab

le t

o in

dic

ate

thei

r p

refe

rre

d a

lte

rnat

ive

and

p

rovi

de

com

me

nts

an

d id

eas

for

refi

ne

me

nt.

Ap

pe

nd

ix E

incl

ud

es a

su

mm

ary

of

the

PA

C a

nd

Pu

blic

Wo

rksh

op

#1.

Su

mm

ary

of

Inp

ut

Alt

ern

ativ

e 2

had

mo

re 1

st C

ho

ice

vote

s th

an A

lte

rnat

ive

1 an

d 3

co

mb

ine

d.

Th

e 1s

t C

ho

ice

vote

s fo

r A

lte

rnat

ives

1 a

nd

3 m

ay h

ave

split

th

e vo

te o

f p

eo

ple

inte

rest

ed

in

a tw

o-w

ay f

acili

ty, w

ith

ab

ou

t h

alf

pre

ferr

ing

se

par

atio

n f

rom

pe

des

tria

ns

that

th

e tw

o-w

ay

cycl

e tr

ack

in A

lte

rnat

ive

3 o

ffe

rs.

Resu

lts fr

om Pu

blic

Wor

ksho

p #1

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PR

OC

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S

21

170th

-Mer

lo Co

rrido

r Con

cept

Plan

A

B

B

SEGM

ENT 1

- PR

EFER

RED A

LTER

NATIV

E

PREF

ERRE

D ALT

ERNA

TIVE

A B

PREF

ERRE

D COR

RIDO

R FAC

ILITIE

SO

ne

-way

Cyc

le T

rack

Bic

ycle

Lan

e o

r B

uff

ere

d B

icyc

le L

ane

Po

ten

tial

Bic

ycle

an

d/o

r P

ed

estr

ian

Cro

ssin

g

SEGM

ENT 2

/3 -

PREF

ERRE

D ALT

ERNA

TIVE

CONN

ECTIO

NS TO

CORR

IDOR

Exi

stin

g M

id-B

lock

/Tra

il C

ross

ing

Exi

stin

g M

ult

i-U

se T

rail

Pla

nn

ed

Mu

lti-

Use

Tra

il

Dev

elo

pm

en

t o

f P

refe

rre

d A

lte

rnat

ive

Fo

llow

ing

th

e in

itia

l ro

un

d o

f m

eet

ing

s th

e p

roje

ct t

eam

w

ork

ed

to

inco

rpo

rate

th

e fe

ed

bac

k fr

om

th

e P

AC

an

d t

he

pu

blic

to

dev

elo

p a

pre

ferr

ed

co

nce

ptu

al d

esig

n. B

ase

d o

n

this

fe

ed

bac

k an

d t

he

info

rmat

ion

gat

he

red

in t

he

init

ial

rese

arch

an

d a

sses

sme

nt

of

the

corr

ido

r, th

e P

MT

mad

e th

e d

eci

sio

n t

o m

ove

to

war

d a

pre

ferr

ed

co

nce

pt

des

ign

th

at

incl

ud

es b

uff

ere

d b

icyc

le la

nes

or

on

e-w

ay c

ycle

tra

cks

thro

ug

ho

ut

the

corr

ido

r w

ith

a w

ide

, lan

dsc

ape

-bu

ffe

red

si

dew

alk

or

pat

h o

n o

ne

sid

e o

f th

e co

rrid

or

and

a s

tan

-d

ard

-wid

th b

uff

ere

d s

idew

alk

on

th

e o

pp

osi

te s

ide

. Th

e P

MT

det

erm

ine

d t

hat

th

e b

uff

er

wid

ths

and

fac

ility

wid

ths

may

var

y sl

igh

tly

in d

iffe

ren

t p

arts

of

the

corr

ido

r to

min

-im

ize

imp

acts

wh

ere

rig

ht-

of-

way

is li

mit

ed

, bu

t p

rovi

de

mo

re g

en

ero

us

faci

lity

wid

ths

wh

ere

rig

ht-

of-

way

allo

ws.

1

3

2

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PR

OC

ES

S

22

Was

hingt

on Co

unty

, Ore

gon

Se

con

d R

ou

nd

of

Me

etin

gs

and

Pu

blic

Ou

tre

ach

In t

he

seco

nd

ro

un

d o

f o

utr

each

, th

e p

roje

ct t

eam

pre

sen

ted

an

init

ial

dra

ft la

you

t o

f th

e p

refe

rre

d c

on

cep

tual

des

ign

an

d r

eq

ues

ted

mo

re

det

aile

d in

pu

t an

d f

ee

db

ack

alo

ng

th

e co

rrid

or.

Th

is a

llow

ed

th

e p

roje

ct

team

to

be

ne

fi t

fro

m t

he

det

aile

d lo

cal k

no

wle

dg

e o

f th

e st

ake

ho

lde

rs

and

co

mm

un

ity

me

mb

ers

th

at li

ve o

r w

ork

in t

he

area

s su

rro

un

din

g

the

corr

ido

r an

d r

eg

ula

rly

trav

el o

n t

he

faci

litie

s in

th

e st

ud

y ar

ea. T

he

pro

ject

tea

m a

lso

so

ug

ht

inp

ut

on

po

ten

tial

fu

ture

des

ign

op

tio

ns

for

the

in

ters

ect

ion

of

170

th A

ven

ue

and

Me

rlo

Ro

ad.

Th

is in

ters

ect

ion

pre

sen

ts u

niq

ue

des

ign

ch

alle

ng

es in

th

e fu

ture

fo

r a

nu

mb

er

of

reas

on

s: •

Fu

ture

tra

ffi c

vo

lum

es a

re p

roje

cte

d t

o g

row

, wit

h a

hig

he

r p

ort

ion

o

f ve

hic

ula

r tr

affi

c tr

ave

ling

bet

we

en

Me

rlo

Ro

ad a

nd

th

e so

uth

ern

se

gm

en

t o

f 17

0th

Ave

nu

e (s

eg

me

nts

2 a

nd

3)

than

th

ere

is t

od

ay.

• W

ith

th

e w

ide

nin

g o

f M

erl

o R

oad

an

d t

he

sou

the

rn s

eg

me

nt

of

170

th

Ave

nu

e to

fi v

e la

nes

, th

e in

ters

ect

ion

will

be

the

tran

siti

on

po

int

fro

m

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n o

n t

he

no

rth

an

d w

est

leg

s to

tw

o

trav

el l

anes

in e

ach

dir

ect

ion

on

th

e so

uth

an

d e

ast

leg

s.

• B

eave

r A

cres

Ele

me

nta

ry S

cho

ol i

s im

me

dia

tely

ad

jace

nt

to t

he

inte

rse

ctio

n, n

ece

ssit

atin

g c

aref

ul c

on

sid

era

tio

n o

f cr

oss

ing

s an

d

trav

el o

f ch

ildre

n v

ia w

alki

ng

an

d b

ikin

g m

od

es s

urr

ou

nd

ing

th

e in

ters

ecti

on

.

• T

he

re is

a n

ee

d t

o p

rovi

de

safe

an

d c

om

fort

able

inte

rse

ctio

n d

esig

n

for

bic

yclis

ts, g

ive

n t

hat

th

e e

nh

ance

d b

icyc

le f

acili

ties

will

like

ly

serv

e ri

de

rs o

f va

ryin

g le

vels

of

com

fort

an

d a

bili

ties

.

• T

he

inte

rse

ctio

n o

f A

ug

ust

a L

ane

and

170

th A

ven

ue

may

ne

ed

a

sig

nal

or

en

han

ced

pe

des

tria

n c

ross

ing

in t

he

futu

re, a

nd

th

e cl

ose

p

roxi

mit

y o

f th

is in

ters

ect

ion

an

d 1

70th

Ave

nu

e/M

erl

o R

oad

can

cr

eate

op

era

tio

nal

ch

alle

ng

es.

• 17

0th

Ave

nu

e h

as a

nu

mb

er

of

acce

sses

on

th

e ea

st s

ide

sou

th o

f th

e 17

0th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, s

om

e o

f w

hic

h m

ay b

e re

con

fi g

ure

d in

th

e n

ear

futu

re.

Th

e p

roje

ct t

eam

pre

sen

ted

a s

et o

f p

ote

nti

al in

ters

ect

ion

des

ign

so

luti

on

s, in

clu

din

g a

re

des

ign

ed

sig

nal

ize

d in

ters

ect

ion

an

d a

ro

un

dab

ou

t an

d g

ath

ere

d in

pu

t o

n t

hes

e tw

o c

on

fi g

ura

tio

ns.

Me

mb

ers

o

f th

e P

AC

an

d p

arti

cip

ants

in t

he

pu

blic

wo

rksh

op

we

re f

airl

y ev

en

ly s

plit

in t

hei

r p

refe

ren

ces

for

a ro

un

dab

ou

t ve

rsu

s a

sig

nal

ize

d

inte

rse

ctio

n a

t th

is lo

cati

on

. Man

y p

eo

ple

exp

ress

ed

a d

esir

e fo

r a

sig

nal

at

Au

gu

sta

Lan

e an

d 1

70th

Ave

nu

e.

Ap

pe

nd

ix F

co

nta

ins

the

Co

mm

un

ity

Ou

trea

ch S

um

mar

y R

epo

rt,

incl

ud

ing

a s

um

mar

y o

f th

e co

mm

ents

rec

eive

d a

t th

e P

AC

Mee

tin

g a

nd

P

ub

lic W

ork

sho

p #

2.

Re

fi n

em

en

ts t

o P

refe

rre

d C

on

cep

tual

De

sig

n a

nd

Ad

dit

ion

al O

pti

on

s

In c

on

sid

era

tio

n o

f th

e se

con

d r

ou

nd

of

inp

ut

fro

m t

he

pu

blic

an

d

me

mb

ers

of

the

PA

C, t

he

pro

ject

tea

m c

on

du

cte

d a

mo

re d

etai

led

ro

un

d

of

anal

ysis

wit

h a

fo

cus

on

th

e ar

ea s

urr

ou

nd

ing

th

e in

ters

ect

ion

of

170

th

Ave

nu

e/M

erl

o R

oad

. Th

e an

alys

is in

clu

de

d:

• A

n a

sses

sme

nt

of

po

ten

tial

ad

dit

ion

al p

ed

estr

ian

cro

ssin

g lo

cati

on

s al

on

g t

he

corr

ido

r, to

en

able

pe

op

le t

o s

afe

ly c

ross

to

bu

s st

op

s an

d

to t

rave

l bet

we

en

des

tin

atio

ns

and

acc

ess

po

ints

on

op

po

site

sid

es

of

the

corr

ido

r.

• A

n a

sses

sme

nt

of

oth

er

inte

rse

ctio

ns

alo

ng

th

e co

rrid

or

to d

ete

rmin

e w

het

he

r ad

dit

ion

al t

raffi

c s

ign

als

are

like

ly t

o b

e w

arra

nte

d in

th

e fu

ture

.

• A

n a

sses

sme

nt

of

traf

fi c

op

era

tio

ns,

incl

ud

ing

ve

hic

ula

r d

ela

y an

d

qu

eu

ing

, at

170

th A

ven

ue/

Me

rlo

Ro

ad a

nd

170

th A

ven

ue/

Au

gu

sta

Lan

e fo

r b

oth

th

e ro

un

dab

ou

t an

d f

or

a si

gn

aliz

ed

inte

rse

ctio

n.

Bas

ed

on

th

e p

revi

ou

s an

alys

is, t

he

inp

ut

fro

m t

he

PA

C a

nd

pu

blic

, an

d r

esu

lts

of

the

add

itio

nal

op

era

tio

nal

an

alys

is, t

he

pro

ject

tea

m

det

erm

ine

d t

hat

th

e p

refe

rre

d c

on

cep

tual

des

ign

wo

uld

incl

ud

e a

rou

nd

abo

ut.

Ho

wev

er,

a si

gn

aliz

ed

inte

rse

ctio

n w

ou

ld a

lso

fu

lfi ll

the

ob

ject

ives

of

the

corr

ido

r an

d c

ou

ld b

e co

nsi

de

red

in f

utu

re d

esig

n

ph

ases

.

Th

e fu

ll an

alys

is is

ava

ilab

le in

Ap

pe

nd

ix G

, th

e Tr

ansp

ort

atio

n A

nal

ysis

M

emo

ran

du

m.

Fin

al C

on

cep

tual

De

sig

n a

nd

Nex

t S

tep

s

Th

e la

st p

has

e o

f th

e p

lan

nin

g p

roce

ss p

rod

uce

d t

he

fi n

al c

on

cep

tual

d

esig

n, a

s p

rese

nte

d in

Ch

apte

r 3

. Ch

apte

r 4

incl

ud

es o

the

r d

esig

n

op

tio

ns

that

can

be

con

sid

ere

d in

th

e u

pco

min

g d

esig

n p

has

es f

or

the

corr

ido

r.

Imag

e Cap

tion

Lack

of no

rthbo

und b

icycle

lane

on 17

0th A

venu

e nor

th of

Mer

lo Ro

ad.

Page 50: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

23

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Th

e p

rop

ose

d c

on

cep

tual

des

ign

pre

sen

ted

in t

he

follo

win

g p

ages

is t

he

resu

lt o

f a

tho

rou

gh

pla

nn

ing

pro

cess

ove

r th

e co

urs

e o

f th

e p

ast

year

, in

clu

din

g a

n a

sses

sme

nt

of

exis

tin

g c

on

dit

ion

s, d

eve

lop

me

nt

of

po

ten

tial

al

tern

ativ

es, p

ub

lic in

volv

em

en

t, a

nd

te

chn

ical

an

alys

is. T

he

con

cep

tual

d

esig

n m

eet

s th

e p

roje

ct o

bje

ctiv

es b

y:

• P

rovi

din

g s

ep

arat

ed

, co

mfo

rtab

le f

acili

ties

fo

r w

alki

ng

an

d b

icyc

ling

al

on

g t

he

corr

ido

r to

en

cou

rag

e u

se o

f th

ese

mo

des

by

pe

op

le o

f al

l ag

es a

nd

ski

ll le

vels

an

d r

ed

uce

re

lian

ce o

n t

he

auto

mo

bile

fo

r lo

cal

trav

el.

• R

eco

mm

en

din

g lo

cati

on

s fo

r p

rovi

din

g d

esig

nat

ed

cro

ssin

gs

for

pe

des

tria

ns

and

bic

yclis

ts in

ord

er

to im

pro

ve c

on

ne

ctiv

ity

to t

he

surr

ou

nd

ing

tra

il sy

ste

m a

nd

lan

d u

ses

and

imp

rove

acc

ess

to b

us

tran

sit

alo

ng

th

e co

rrid

or.

• P

rop

osi

ng

ad

just

me

nts

to

ve

hic

le la

ne

wid

ths

to m

inim

ize

rig

ht-

of-

way

imp

acts

wh

ile p

rovi

din

g a

de

qu

ate

veh

icu

lar

cap

acit

y fo

r fu

ture

tr

ave

l de

man

ds.

• U

sin

g a

des

ign

sp

ee

d o

f 3

5 m

ph

, lo

we

r th

an t

he

45

mp

h t

ypic

al

des

ign

sp

ee

d f

or

Co

un

ty a

rte

rial

s.•

Cre

atin

g t

he

op

po

rtu

nit

y to

en

han

ce t

he

nat

ura

l fea

ture

s al

on

g t

he

corr

ido

r an

d t

he

rip

aria

n c

orr

ido

r th

at in

ters

ect

s 17

0th

Ave

nu

e.

• P

rovi

din

g e

nh

ance

d a

cces

s to

th

e M

AX

lig

ht

rail

stat

ion

s an

d

off

ers

des

ign

so

luti

on

s fo

r b

us

sto

ps

alo

ng

th

e co

rrid

or

that

are

co

mfo

rtab

le f

or

bu

s d

rive

rs, b

us

rid

ers

, an

d b

icyc

lists

.

On

e o

f th

e o

bje

ctiv

es o

f th

e p

roje

ct w

as t

o e

xplo

re p

roje

ct p

has

ing

o

pti

on

s th

at c

ou

ld d

eliv

er

pe

des

tria

n/b

icyc

le f

acili

ties

in a

dva

nce

of

pla

nn

ed

ro

adw

ay w

ide

nin

g.

Ph

asin

g w

as c

on

sid

ere

d in

th

e d

eve

lop

me

nt

of

the

alte

rnat

ives

an

d t

he

pre

ferr

ed

alt

ern

ativ

e; h

ow

eve

r, th

e p

lace

me

nt

of

on

e-w

ay c

ycle

tra

cks

on

eac

h s

ide

of

the

road

way

mak

es p

has

ing

d

iffi

cult

an

d d

oes

no

t o

ffe

r th

e p

oss

ibili

ty t

o c

on

stru

ct a

tw

o-w

ay

bic

ycle

fac

ility

on

on

e si

de

of

the

road

way

pri

or

to t

he

full

wid

en

ing

. H

ow

eve

r, th

e p

rop

ose

d d

esig

n d

oes

off

er

oth

er

ph

asin

g o

pp

ort

un

itie

s fo

r in

cre

me

nta

lly e

nh

anci

ng

th

e p

ed

estr

ian

an

d b

icyc

le f

acili

ties

:

• Im

pro

vem

en

ts c

an b

e d

on

e b

y se

gm

en

t, w

ith

ou

t h

avin

g t

o f

un

d

the

full

corr

ido

r im

pro

vem

en

ts a

t th

e sa

me

tim

e. S

eg

me

nt

1 re

qu

ires

re

lati

vely

min

or

chan

ges

an

d im

pro

vem

en

ts c

om

par

ed

to

its

exis

tin

g c

on

dit

ion

. Se

gm

en

t 2

wo

uld

be

the

mo

st c

ost

ly t

o

con

stru

ct, d

ue

to t

he

ne

ed

to

re

pla

ce t

he

bri

dg

e. S

eg

me

nt

3 (

Me

rlo

R

oad

) co

uld

be

do

ne

at a

dif

fere

nt

tim

e th

an t

he

oth

er

seg

me

nts

.•

Th

ere

is a

po

ssib

ility

of

con

stru

ctin

g a

sid

ewal

k an

d c

ycle

tra

ck

on

on

e si

de

of

the

road

way

pri

or

to f

ull

wid

en

ing

to

imp

rove

p

ed

estr

ian

acc

ess.

Ho

wev

er,

the

pro

visi

on

of

a b

icyc

le f

acili

ty o

n

on

ly o

ne

sid

e o

f th

e ro

adw

ay c

ou

ld in

vite

tw

o-w

ay b

icyc

le t

rave

l o

n a

fac

ility

no

t d

esig

ne

d f

or

two

-way

tra

vel,

and

may

res

ult

in

cro

ssin

g m

ove

me

nts

no

t an

tici

pat

ed

un

de

r th

e fu

ll d

esig

n.

• S

eg

me

nt

3 c

urr

en

tly

has

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n a

nd

a

two

-way

left

tu

rn la

ne

in t

he

cen

ter.

Fiv

e fo

ot

bic

ycle

lan

es c

ou

ld

be

add

ed

to

th

is s

eg

me

nt

in t

he

nea

r te

rm t

hro

ug

h r

e-s

trip

ing

, w

ith

ou

t m

ovi

ng

th

e ex

isti

ng

cu

rbs.

Re

-str

ipin

g w

ou

ld r

esu

lt in

a

cro

ss s

ect

ion

wit

h 5

-fo

ot

bic

ycle

lan

es, 1

1-fo

ot

trav

el l

anes

, an

d a

12

-fo

ot

two

-way

left

tu

rn la

ne

or

cen

ter

me

dia

n.

Ap

pe

nd

ix H

co

nta

ins

a p

lan

nin

g-l

eve

l co

st e

stim

ate

fo

r im

ple

me

nti

ng

th

e p

refe

rre

d c

on

cep

tual

de

sig

n o

n S

eg

me

nt

2.

CHAP

TER 0

3 | P

ROPO

SED

CONC

EPTU

AL DE

SIGN

SEGM

ENT 1

- CO

NCEP

T PLA

N

SEGM

ENT 2

/3 -

CONC

EPT P

LAN

Co

rrid

or

Se

gm

en

ts

1

3

2

Page 51: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

23

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Th

e p

rop

ose

d c

on

cep

tual

des

ign

pre

sen

ted

in t

he

follo

win

g p

ages

is t

he

resu

lt o

f a

tho

rou

gh

pla

nn

ing

pro

cess

ove

r th

e co

urs

e o

f th

e p

ast

year

, in

clu

din

g a

n a

sses

sme

nt

of

exis

tin

g c

on

dit

ion

s, d

eve

lop

me

nt

of

po

ten

tial

al

tern

ativ

es, p

ub

lic in

volv

em

en

t, a

nd

te

chn

ical

an

alys

is. T

he

con

cep

tual

d

esig

n m

eet

s th

e p

roje

ct o

bje

ctiv

es b

y:

• P

rovi

din

g s

ep

arat

ed

, co

mfo

rtab

le f

acili

ties

fo

r w

alki

ng

an

d b

icyc

ling

al

on

g t

he

corr

ido

r to

en

cou

rag

e u

se o

f th

ese

mo

des

by

pe

op

le o

f al

l ag

es a

nd

ski

ll le

vels

an

d r

ed

uce

re

lian

ce o

n t

he

auto

mo

bile

fo

r lo

cal

trav

el.

• R

eco

mm

en

din

g lo

cati

on

s fo

r p

rovi

din

g d

esig

nat

ed

cro

ssin

gs

for

pe

des

tria

ns

and

bic

yclis

ts in

ord

er

to im

pro

ve c

on

ne

ctiv

ity

to t

he

surr

ou

nd

ing

tra

il sy

ste

m a

nd

lan

d u

ses

and

imp

rove

acc

ess

to b

us

tran

sit

alo

ng

th

e co

rrid

or.

• P

rop

osi

ng

ad

just

me

nts

to

ve

hic

le la

ne

wid

ths

to m

inim

ize

rig

ht-

of-

way

imp

acts

wh

ile p

rovi

din

g a

de

qu

ate

veh

icu

lar

cap

acit

y fo

r fu

ture

tr

ave

l de

man

ds.

• U

sin

g a

des

ign

sp

ee

d o

f 3

5 m

ph

, lo

we

r th

an t

he

45

mp

h t

ypic

al

des

ign

sp

ee

d f

or

Co

un

ty a

rte

rial

s.•

Cre

atin

g t

he

op

po

rtu

nit

y to

en

han

ce t

he

nat

ura

l fea

ture

s al

on

g t

he

corr

ido

r an

d t

he

rip

aria

n c

orr

ido

r th

at in

ters

ect

s 17

0th

Ave

nu

e.

• P

rovi

din

g e

nh

ance

d a

cces

s to

th

e M

AX

lig

ht

rail

stat

ion

s an

d

off

ers

des

ign

so

luti

on

s fo

r b

us

sto

ps

alo

ng

th

e co

rrid

or

that

are

co

mfo

rtab

le f

or

bu

s d

rive

rs, b

us

rid

ers

, an

d b

icyc

lists

.

On

e o

f th

e o

bje

ctiv

es o

f th

e p

roje

ct w

as t

o e

xplo

re p

roje

ct p

has

ing

o

pti

on

s th

at c

ou

ld d

eliv

er

pe

des

tria

n/b

icyc

le f

acili

ties

in a

dva

nce

of

pla

nn

ed

ro

adw

ay w

ide

nin

g.

Ph

asin

g w

as c

on

sid

ere

d in

th

e d

eve

lop

me

nt

of

the

alte

rnat

ives

an

d t

he

pre

ferr

ed

alt

ern

ativ

e; h

ow

eve

r, th

e p

lace

me

nt

of

on

e-w

ay c

ycle

tra

cks

on

eac

h s

ide

of

the

road

way

mak

es p

has

ing

d

iffi

cult

an

d d

oes

no

t o

ffe

r th

e p

oss

ibili

ty t

o c

on

stru

ct a

tw

o-w

ay

bic

ycle

fac

ility

on

on

e si

de

of

the

road

way

pri

or

to t

he

full

wid

en

ing

. H

ow

eve

r, th

e p

rop

ose

d d

esig

n d

oes

off

er

oth

er

ph

asin

g o

pp

ort

un

itie

s fo

r in

cre

me

nta

lly e

nh

anci

ng

th

e p

ed

estr

ian

an

d b

icyc

le f

acili

ties

:

• Im

pro

vem

en

ts c

an b

e d

on

e b

y se

gm

en

t, w

ith

ou

t h

avin

g t

o f

un

d

the

full

corr

ido

r im

pro

vem

en

ts a

t th

e sa

me

tim

e. S

eg

me

nt

1 re

qu

ires

re

lati

vely

min

or

chan

ges

an

d im

pro

vem

en

ts c

om

par

ed

to

its

exis

tin

g c

on

dit

ion

. Se

gm

en

t 2

wo

uld

be

the

mo

st c

ost

ly t

o

con

stru

ct, d

ue

to t

he

ne

ed

to

re

pla

ce t

he

bri

dg

e. S

eg

me

nt

3 (

Me

rlo

R

oad

) co

uld

be

do

ne

at a

dif

fere

nt

tim

e th

an t

he

oth

er

seg

me

nts

.•

Th

ere

is a

po

ssib

ility

of

con

stru

ctin

g a

sid

ewal

k an

d c

ycle

tra

ck

on

on

e si

de

of

the

road

way

pri

or

to f

ull

wid

en

ing

to

imp

rove

p

ed

estr

ian

acc

ess.

Ho

wev

er,

the

pro

visi

on

of

a b

icyc

le f

acili

ty o

n

on

ly o

ne

sid

e o

f th

e ro

adw

ay c

ou

ld in

vite

tw

o-w

ay b

icyc

le t

rave

l o

n a

fac

ility

no

t d

esig

ne

d f

or

two

-way

tra

vel,

and

may

res

ult

in

cro

ssin

g m

ove

me

nts

no

t an

tici

pat

ed

un

de

r th

e fu

ll d

esig

n.

• S

eg

me

nt

3 c

urr

en

tly

has

on

e tr

ave

l lan

e in

eac

h d

ire

ctio

n a

nd

a

two

-way

left

tu

rn la

ne

in t

he

cen

ter.

Fiv

e fo

ot

bic

ycle

lan

es c

ou

ld

be

add

ed

to

th

is s

eg

me

nt

in t

he

nea

r te

rm t

hro

ug

h r

e-s

trip

ing

, w

ith

ou

t m

ovi

ng

th

e ex

isti

ng

cu

rbs.

Re

-str

ipin

g w

ou

ld r

esu

lt in

a

cro

ss s

ect

ion

wit

h 5

-fo

ot

bic

ycle

lan

es, 1

1-fo

ot

trav

el l

anes

, an

d a

12

-fo

ot

two

-way

left

tu

rn la

ne

or

cen

ter

me

dia

n.

Ap

pe

nd

ix H

co

nta

ins

a p

lan

nin

g-l

eve

l co

st e

stim

ate

fo

r im

ple

me

nti

ng

th

e p

refe

rre

d c

on

cep

tual

de

sig

n o

n S

eg

me

nt

2.

CHAP

TER 0

3 | P

ROPO

SED

CONC

EPTU

AL DE

SIGN

SEGM

ENT 1

- CO

NCEP

T PLA

N

SEGM

ENT 2

/3 -

CONC

EPT P

LAN

Co

rrid

or

Se

gm

en

ts

1

3

2

Page 52: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

24W

ashin

gton

Coun

ty, O

rego

n

Th

ree

lan

e cr

oss

se

ctio

n

wit

h b

icyc

le la

ne

s/b

uff

ere

d

bic

ycle

lan

es

and

sid

ewal

ks.

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

s.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

170

th A

ven

ue

bet

we

en

Me

rlo

Ro

ad a

nd

Bas

elin

e R

oad

. B

eca

use

it is

loca

ted

in a

w

etla

nd

are

a, t

he

faci

lity

will

ne

ed

to

be

un

de

r th

e ro

adw

ay o

r th

e w

etla

nd

s w

ill n

ee

d t

o b

e m

itig

ate

d.

On

-str

eet

par

kin

g is

p

rop

ose

d o

n t

he

we

st s

ide

of

170

th A

ven

ue

in t

his

are

a to

su

pp

ort

a p

ote

nti

al f

utu

re

mix

ed

-use

re

dev

elo

pm

en

t w

ith

sto

refr

on

t re

tail.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Cro

ssin

g lo

cati

on

n

ee

ds

to b

e m

on

ito

red

to

ass

ess

ne

ed

fo

r e

nh

ance

me

nts

.

Th

e p

rop

ose

d r

ou

nd

abo

ut

at t

he

inte

rse

ctio

n o

f 17

0th

Ave

nu

e/M

erl

o R

oad

is a

mu

lti-

lan

e ro

un

dab

ou

t th

at

will

acc

om

mo

dat

e tr

affi

c vo

lum

e fo

reca

sts

and

is d

esi

gn

ed

to

re

du

ce a

pp

roac

hin

g v

eh

icle

sp

ee

ds

to le

ss

than

25

mile

s p

er

ho

ur.

Th

e ro

un

dab

ou

t d

esi

gn

has

a lo

we

r m

ain

ten

ance

co

st t

han

a t

raffi

c s

ign

al a

nd

has

fe

we

r co

nfl

ict

po

ints

fo

r ve

hic

les.

Th

e p

rop

ose

d r

ou

nd

abo

ut

de

sig

n a

lso

off

ers

be

ne

fi ts

fo

r p

ed

est

rian

s an

d b

icyc

lists

. Bic

yclis

ts c

an c

ho

ose

to

en

ter

the

wid

en

ed

sid

ewal

k ap

pro

ach

ing

th

e in

ters

ect

ion

an

d u

se

the

pe

de

stri

an c

ross

ing

s. T

he

cro

ssin

gs

are

split

wit

h r

efu

ge

isla

nd

s, s

o p

ed

est

rian

s o

r b

icyc

lists

usi

ng

th

e si

dew

alks

on

ly n

ee

d t

o c

ross

on

e d

ire

ctio

n o

f tr

affi

c at

a t

ime

. Eac

h le

g o

f th

e ro

un

dab

ou

t h

as a

de

sig

nat

ed

cr

oss

ing

. M

ore

co

nfi

de

nt

bic

yclis

ts c

an a

lso

ch

oo

se t

o e

nte

r th

e ve

hic

le t

rave

l lan

e ap

pro

ach

ing

th

e ro

un

dab

ou

t an

d n

avig

ate

thro

ug

h t

he

inte

rse

ctio

n a

s a

veh

icle

wo

uld

. Be

cau

se v

eh

icu

lar

spe

ed

s ar

e sl

ow

ed

co

min

g in

to t

he

rou

nd

abo

ut,

th

is o

pti

on

can

be

com

fort

able

fo

r so

me

bic

yclis

ts.

It is

like

ly t

hat

e

nh

ance

d c

ross

ing

tr

eat

me

nts

will

be

ne

ed

ed

at

this

loca

tio

n

as p

ed

est

rian

vo

lum

es

incr

eas

e.

Wh

ile a

sig

nal

is

no

t cu

rre

ntl

y w

arra

nte

d a

t th

is

loca

tio

n, s

ign

al

war

ran

ts s

ho

uld

b

e m

on

ito

red

as

volu

me

s ch

ang

e.

N

Page 53: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

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SE

D C

ON

CE

PT

UA

L D

ES

IGN

25

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Co

nve

rtin

g V

en

dla

Par

k L

ane

to a

rig

ht-

in r

igh

t-o

ut

acce

ss c

ou

ld a

llow

fo

r re

du

ctio

n o

f th

e m

ed

ian

fo

r a

gre

ate

r d

ista

nce

, re

sult

ing

in r

ed

uce

d c

ost

s an

d r

igh

t-o

f-w

ay n

ee

ds.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is

are

a to

tre

at t

he

imp

erv

iou

s su

rfac

e o

n

170

th A

ven

ue

corr

ido

r b

etw

ee

n A

lexa

nd

er

Str

eet

an

d M

erl

o R

oad

.

Cro

ssin

g t

o

nat

ure

par

k tr

ail n

ee

ds

to

be

mo

nit

ore

d

to a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

It is

like

ly t

hat

en

han

ced

cr

oss

ing

tre

atm

en

ts

will

be

ne

ed

ed

at

this

lo

cati

on

as

pe

de

stri

an

volu

me

s in

cre

ase

du

e to

th

e n

atu

re p

ark

trai

l an

d

po

ten

tial

fu

ture

bu

s st

op

.

Th

e p

rop

ose

d d

esi

gn

do

es

hav

e im

pac

ts t

o s

om

e o

f th

e m

atu

re t

ree

s lin

ing

th

e Tu

alat

in H

ills

Nat

ure

Par

k th

at a

re

curr

en

tly

loca

ted

wit

hin

th

e ri

gh

t-o

f-w

ay. T

he

de

sig

n in

th

ese

loca

tio

ns

can

co

nsi

de

r p

erv

iou

s si

dew

alk

or

bic

ycle

fa

cilit

y tr

eat

me

nts

to

en

sure

th

e h

eal

th o

f tr

ee

s th

at

rem

ain

in c

lose

pro

xim

ity

to t

he

stre

et.

Th

e 2

013

Tu

alat

in V

alle

y H

igh

way

Co

rrid

or

Pla

n c

alls

fo

r ad

dit

ion

al t

urn

lan

es

at t

his

inte

rse

ctio

n.

Th

ese

fe

atu

res

are

no

t in

clu

de

d in

th

e co

nce

ptu

al d

esi

gn

an

d r

eq

uir

e fu

rth

er

stu

dy.

Th

e b

rid

ge

cou

ld b

e n

arro

we

d b

y re

du

cin

g

the

me

dia

n (

no

la

nd

scap

ing

) to

sav

e co

sts,

re

du

ce r

igh

t-o

f-w

ay n

ee

ds,

an

d

min

imiz

e tr

ee

imp

acts

.

Re

con

stru

ctio

n o

f th

e b

rid

ge

cou

ld a

llow

fo

r th

e p

ote

nti

al o

f a

pe

de

stri

an

un

de

r-cr

oss

ing

an

d

en

han

cem

en

ts t

o t

he

exis

tin

g r

ipar

ian

co

rrid

or

alo

ng

Be

ave

rto

n C

ree

k,

wh

ich

is a

lso

a c

ross

ing

ar

ea

for

anim

als.

N

Th

e p

rop

ose

d

de

sig

n t

ies

in w

ith

th

e ex

isti

ng

cro

ss

sect

ion

of

170

th

Ave

nu

e ju

st n

ort

h o

f A

lexa

nd

er

Str

eet

.

Page 54: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

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RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

26

Was

hingt

on Co

unty

, Ore

gon

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

Cro

ssin

g lo

cati

on

ne

ed

s to

be

mo

nit

ore

d t

o a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n 1

70th

Ave

nu

e an

d

app

roxi

mat

ely

12

00

fe

et n

ort

h o

f M

erl

o

Co

urt

(cr

est

po

int

of

Me

rlo

Ro

ad).

Ret

ain

ing

wal

l may

be

ne

ed

ed

in t

his

are

a.

Me

dia

n c

ou

ld b

e re

du

ced

b

etw

ee

n M

erl

o C

ou

rt a

nd

th

e b

us

gar

age

to s

ave

cost

s, r

ed

uce

rig

ht-

of-

way

n

ee

ds,

an

d m

inim

ize

tre

e im

pac

ts.

Pro

po

sed

de

sig

n p

rovi

de

s a

con

ne

ctio

n t

o a

nd

fro

m

170

th A

ven

ue

to t

he

reg

ion

al t

rail

net

wo

rk.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n t

he

stre

et c

rest

po

int

and

Je

nki

ns

Ro

ad.

N

Th

e p

rop

ose

d d

esi

gn

ti

es

in w

ith

th

e cu

rre

nt

158

th A

ven

ue

Co

un

ty

imp

rove

me

nt

pro

ject

.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Page 55: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 56: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 57: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 58: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 59: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

24W

ashin

gton

Coun

ty, O

rego

n

Th

ree

lan

e cr

oss

se

ctio

n

wit

h b

icyc

le la

ne

s/b

uff

ere

d

bic

ycle

lan

es

and

sid

ewal

ks.

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

s.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

170

th A

ven

ue

bet

we

en

Me

rlo

Ro

ad a

nd

Bas

elin

e R

oad

. B

eca

use

it is

loca

ted

in a

w

etla

nd

are

a, t

he

faci

lity

will

ne

ed

to

be

un

de

r th

e ro

adw

ay o

r th

e w

etla

nd

s w

ill n

ee

d t

o b

e m

itig

ate

d.

On

-str

eet

par

kin

g is

p

rop

ose

d o

n t

he

we

st s

ide

of

170

th A

ven

ue

in t

his

are

a to

su

pp

ort

a p

ote

nti

al f

utu

re

mix

ed

-use

re

dev

elo

pm

en

t w

ith

sto

refr

on

t re

tail.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Cro

ssin

g lo

cati

on

n

ee

ds

to b

e m

on

ito

red

to

ass

ess

ne

ed

fo

r e

nh

ance

me

nts

.

Th

e p

rop

ose

d r

ou

nd

abo

ut

at t

he

inte

rse

ctio

n o

f 17

0th

Ave

nu

e/M

erl

o R

oad

is a

mu

lti-

lan

e ro

un

dab

ou

t th

at

will

acc

om

mo

dat

e tr

affi

c vo

lum

e fo

reca

sts

and

is d

esi

gn

ed

to

re

du

ce a

pp

roac

hin

g v

eh

icle

sp

ee

ds

to le

ss

than

25

mile

s p

er

ho

ur.

Th

e ro

un

dab

ou

t d

esi

gn

has

a lo

we

r m

ain

ten

ance

co

st t

han

a t

raffi

c s

ign

al a

nd

has

fe

we

r co

nfl

ict

po

ints

fo

r ve

hic

les.

Th

e p

rop

ose

d r

ou

nd

abo

ut

de

sig

n a

lso

off

ers

be

ne

fi ts

fo

r p

ed

est

rian

s an

d b

icyc

lists

. Bic

yclis

ts c

an c

ho

ose

to

en

ter

the

wid

en

ed

sid

ewal

k ap

pro

ach

ing

th

e in

ters

ect

ion

an

d u

se

the

pe

de

stri

an c

ross

ing

s. T

he

cro

ssin

gs

are

split

wit

h r

efu

ge

isla

nd

s, s

o p

ed

est

rian

s o

r b

icyc

lists

usi

ng

th

e si

dew

alks

on

ly n

ee

d t

o c

ross

on

e d

ire

ctio

n o

f tr

affi

c at

a t

ime

. Eac

h le

g o

f th

e ro

un

dab

ou

t h

as a

de

sig

nat

ed

cr

oss

ing

. M

ore

co

nfi

de

nt

bic

yclis

ts c

an a

lso

ch

oo

se t

o e

nte

r th

e ve

hic

le t

rave

l lan

e ap

pro

ach

ing

th

e ro

un

dab

ou

t an

d n

avig

ate

thro

ug

h t

he

inte

rse

ctio

n a

s a

veh

icle

wo

uld

. Be

cau

se v

eh

icu

lar

spe

ed

s ar

e sl

ow

ed

co

min

g in

to t

he

rou

nd

abo

ut,

th

is o

pti

on

can

be

com

fort

able

fo

r so

me

bic

yclis

ts.

It is

like

ly t

hat

e

nh

ance

d c

ross

ing

tr

eat

me

nts

will

be

ne

ed

ed

at

this

loca

tio

n

as p

ed

est

rian

vo

lum

es

incr

eas

e.

Wh

ile a

sig

nal

is

no

t cu

rre

ntl

y w

arra

nte

d a

t th

is

loca

tio

n, s

ign

al

war

ran

ts s

ho

uld

b

e m

on

ito

red

as

volu

me

s ch

ang

e.

N

Page 60: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

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PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

25

170th

-Mer

lo Co

rrido

r Con

cept

Plan

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

.

Co

nve

rtin

g V

en

dla

Par

k L

ane

to a

rig

ht-

in r

igh

t-o

ut

acce

ss c

ou

ld a

llow

fo

r re

du

ctio

n o

f th

e m

ed

ian

fo

r a

gre

ate

r d

ista

nce

, re

sult

ing

in r

ed

uce

d c

ost

s an

d r

igh

t-o

f-w

ay n

ee

ds.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is

are

a to

tre

at t

he

imp

erv

iou

s su

rfac

e o

n

170

th A

ven

ue

corr

ido

r b

etw

ee

n A

lexa

nd

er

Str

eet

an

d M

erl

o R

oad

.

Cro

ssin

g t

o

nat

ure

par

k tr

ail n

ee

ds

to

be

mo

nit

ore

d

to a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

It is

like

ly t

hat

en

han

ced

cr

oss

ing

tre

atm

en

ts

will

be

ne

ed

ed

at

this

lo

cati

on

as

pe

de

stri

an

volu

me

s in

cre

ase

du

e to

th

e n

atu

re p

ark

trai

l an

d

po

ten

tial

fu

ture

bu

s st

op

.

Th

e p

rop

ose

d d

esi

gn

do

es

hav

e im

pac

ts t

o s

om

e o

f th

e m

atu

re t

ree

s lin

ing

th

e Tu

alat

in H

ills

Nat

ure

Par

k th

at a

re

curr

en

tly

loca

ted

wit

hin

th

e ri

gh

t-o

f-w

ay. T

he

de

sig

n in

th

ese

loca

tio

ns

can

co

nsi

de

r p

erv

iou

s si

dew

alk

or

bic

ycle

fa

cilit

y tr

eat

me

nts

to

en

sure

th

e h

eal

th o

f tr

ee

s th

at

rem

ain

in c

lose

pro

xim

ity

to t

he

stre

et.

Th

e 2

013

Tu

alat

in V

alle

y H

igh

way

Co

rrid

or

Pla

n c

alls

fo

r ad

dit

ion

al t

urn

lan

es

at t

his

inte

rse

ctio

n.

Th

ese

fe

atu

res

are

no

t in

clu

de

d in

th

e co

nce

ptu

al d

esi

gn

an

d r

eq

uir

e fu

rth

er

stu

dy.

Th

e b

rid

ge

cou

ld b

e n

arro

we

d b

y re

du

cin

g

the

me

dia

n (

no

la

nd

scap

ing

) to

sav

e co

sts,

re

du

ce r

igh

t-o

f-w

ay n

ee

ds,

an

d

min

imiz

e tr

ee

imp

acts

.

Re

con

stru

ctio

n o

f th

e b

rid

ge

cou

ld a

llow

fo

r th

e p

ote

nti

al o

f a

pe

de

stri

an

un

de

r-cr

oss

ing

an

d

en

han

cem

en

ts t

o t

he

exis

tin

g r

ipar

ian

co

rrid

or

alo

ng

Be

ave

rto

n C

ree

k,

wh

ich

is a

lso

a c

ross

ing

ar

ea

for

anim

als.

N

Th

e p

rop

ose

d

de

sig

n t

ies

in w

ith

th

e ex

isti

ng

cro

ss

sect

ion

of

170

th

Ave

nu

e ju

st n

ort

h o

f A

lexa

nd

er

Str

eet

.

Page 61: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

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SE

D C

ON

CE

PT

UA

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IGN

26

Was

hingt

on Co

unty

, Ore

gon

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

Cro

ssin

g lo

cati

on

ne

ed

s to

be

mo

nit

ore

d t

o a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n 1

70th

Ave

nu

e an

d

app

roxi

mat

ely

12

00

fe

et n

ort

h o

f M

erl

o

Co

urt

(cr

est

po

int

of

Me

rlo

Ro

ad).

Ret

ain

ing

wal

l may

be

ne

ed

ed

in t

his

are

a.

Me

dia

n c

ou

ld b

e re

du

ced

b

etw

ee

n M

erl

o C

ou

rt a

nd

th

e b

us

gar

age

to s

ave

cost

s, r

ed

uce

rig

ht-

of-

way

n

ee

ds,

an

d m

inim

ize

tre

e im

pac

ts.

Pro

po

sed

de

sig

n p

rovi

de

s a

con

ne

ctio

n t

o a

nd

fro

m

170

th A

ven

ue

to t

he

reg

ion

al t

rail

net

wo

rk.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n t

he

stre

et c

rest

po

int

and

Je

nki

ns

Ro

ad.

N

Th

e p

rop

ose

d d

esi

gn

ti

es

in w

ith

th

e cu

rre

nt

158

th A

ven

ue

Co

un

ty

imp

rove

me

nt

pro

ject

.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Page 62: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 63: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 64: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 65: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 66: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

03P

RO

PO

SE

D C

ON

CE

PT

UA

L D

ES

IGN

26

Was

hingt

on Co

unty

, Ore

gon

Fiv

e la

ne

cro

ss s

ect

ion

wit

h

cycl

e tr

acks

an

d s

idew

alks

Cro

ssin

g lo

cati

on

ne

ed

s to

be

mo

nit

ore

d t

o a

sse

ss

ne

ed

fo

r e

nh

ance

me

nts

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n 1

70th

Ave

nu

e an

d

app

roxi

mat

ely

12

00

fe

et n

ort

h o

f M

erl

o

Co

urt

(cr

est

po

int

of

Me

rlo

Ro

ad).

Ret

ain

ing

wal

l may

be

ne

ed

ed

in t

his

are

a.

Me

dia

n c

ou

ld b

e re

du

ced

b

etw

ee

n M

erl

o C

ou

rt a

nd

th

e b

us

gar

age

to s

ave

cost

s, r

ed

uce

rig

ht-

of-

way

n

ee

ds,

an

d m

inim

ize

tre

e im

pac

ts.

Pro

po

sed

de

sig

n p

rovi

de

s a

con

ne

ctio

n t

o a

nd

fro

m

170

th A

ven

ue

to t

he

reg

ion

al t

rail

net

wo

rk.

Th

e p

rop

ose

d d

esi

gn

e

nh

ance

s p

ed

est

rian

an

d b

icyc

le a

cce

ss t

o

MA

X s

tati

on

.

A w

ate

r q

ual

ity/

det

en

tio

n p

on

d is

n

ece

ssar

y in

th

is a

rea

to t

reat

th

e im

pe

rvio

us

surf

ace

on

Me

rlo

Ro

ad

corr

ido

r b

etw

ee

n t

he

stre

et c

rest

po

int

and

Je

nki

ns

Ro

ad.

N

Th

e p

rop

ose

d d

esi

gn

ti

es

in w

ith

th

e cu

rre

nt

158

th A

ven

ue

Co

un

ty

imp

rove

me

nt

pro

ject

.

Wh

ile a

sig

nal

is n

ot

curr

en

tly

war

ran

ted

at

this

lo

cati

on

, sig

nal

war

ran

ts

sho

uld

be

mo

nit

ore

d a

s vo

lum

es

chan

ge

.

Page 67: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 68: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent

04O

TH

ER

DE

SIG

N O

PT

ION

S F

OR

CO

NS

IDE

RA

TIO

N

27170

th-M

erlo

Corri

dor C

once

pt Pl

an

Th

e co

nce

ptu

al d

esig

n p

rese

nte

d in

Ch

apte

r 3

re

pre

sen

ts t

he

pre

ferr

ed

al

tern

ativ

e re

sult

ing

fro

m t

he

pla

nn

ing

pro

cess

. Ho

wev

er,

add

itio

nal

d

etai

ls a

nd

co

nsi

de

rati

on

s ar

e o

fte

n u

nco

vere

d in

th

e m

ore

det

aile

d

des

ign

ph

ase

. T

he

pro

ject

te

am d

id c

on

sid

er

alte

rnat

ive

con

fi g

ura

tio

ns

for

the

170

th

Ave

nu

e/M

erl

o R

oad

inte

rse

ctio

n, i

n a

dd

itio

n t

o t

he

rou

nd

abo

ut

sho

wn

in

the

pro

po

sed

co

nce

ptu

al d

esig

n. T

hes

e al

tern

ativ

es in

clu

de

a si

gn

aliz

ed

inte

rsec

tio

n, s

ho

wn

he

re, a

nd

a d

iffe

ren

t p

ote

nti

al r

ou

nd

abo

ut

alig

nm

en

t,

sho

wn

in A

pp

en

dix

I.

Th

e p

rop

ose

d la

ne

con

fi g

ura

tio

n f

or

the

sig

nal

ize

d a

lte

rnat

ive

has

th

e o

uts

ide

lan

e o

n t

he

no

rth

bo

un

d a

pp

roac

h b

eco

min

g a

rig

ht-

turn

tra

p

lan

e. T

he

stan

dar

d w

ay t

o s

trip

e a

bic

ycle

lan

e th

rou

gh

an

inte

rse

ctio

n

is t

o p

osi

tio

n t

he

bic

ycle

lan

e b

etw

ee

n t

he

thro

ug

h a

nd

rig

ht-

turn

ing

ve

hic

le la

nes

. Ho

wev

er,

the

ne

ed

fo

r th

e b

icyc

list

to m

erg

e ac

ross

a

full

lan

e o

f ve

hic

ula

r tr

affi

c p

rio

r to

th

e in

ters

ect

ion

cre

ates

a “

Lev

el o

f Tr

affi

c S

tres

s” h

igh

er

than

mo

st p

eo

ple

fe

el c

om

fort

able

nav

igat

ing

. In

ord

er

to m

ain

tain

a h

igh

leve

l of

com

fort

fo

r b

icyc

lists

an

d m

inim

ize

con

fl ic

ts f

or

vari

ou

s m

od

es, t

he

sig

nal

ize

d in

ters

ect

ion

tak

es a

dif

fere

nt

app

roac

h f

or

bic

yclis

t tr

ave

l th

rou

gh

th

is in

ters

ect

ion

.

Th

e si

gn

aliz

ed

inte

rse

ctio

n c

on

cep

t d

esig

n p

rovi

des

a c

urb

tig

ht

bic

ycle

lan

e at

th

e in

ters

ect

ion

, bic

ycle

bo

x p

ave

me

nt

mar

kin

gs,

an

d

bic

ycle

sig

nal

to

allo

w b

icyc

lists

pas

sag

e th

rou

gh

th

e in

ters

ect

ion

on

th

eir

ow

n g

ree

n p

has

e, r

esu

ltin

g in

no

ve

hic

le c

on

fl ic

ts w

ith

bic

yclis

ts.

Fu

rth

erm

ore

, a r

igh

t-tu

rn o

n-r

ed

(R

TO

R)

rest

rict

ion

sh

ou

ld b

e co

nsi

de

red

– t

his

res

tric

tio

n c

ou

ld b

e an

“ac

tive

” re

stri

ctio

n; i

n w

hic

h t

he

RT

OR

res

tric

tio

n is

on

ly a

ctiv

ate

d w

he

n c

yclis

ts a

re d

ete

cte

d/p

rese

nt.

T

his

RT

OR

tre

atm

en

t h

as b

ee

n u

sed

at

seve

ral l

oca

tio

ns

in t

he

Po

rtla

nd

m

etro

are

a, s

uch

as

at t

he

NE

Bro

adw

ay a

nd

N W

illia

ms

Ave

in P

ort

lan

d

and

N R

osa

Par

ks W

ay/I

-5 S

ou

thb

ou

nd

Ram

p In

ters

ect

ion

s. T

he

inte

rse

ctio

n d

esig

n a

lso

allo

ws

bic

yclis

ts t

o m

ake

a “t

wo

-sta

ge

left

tu

rn”

or

ele

ct t

o m

ake

a ve

hic

ula

r le

ft t

urn

fro

m t

he

trav

el l

anes

. CH

APTE

R 04

| OTH

ER DE

SIGN

OPTIO

NS FO

R CON

SIDER

ATIO

N

N

An ‘a

ctive

’ no r

ight o

n red

restr

iction

with

the b

icycle

sign

al sh

ould

be co

nsid

ered

with

this

inter

secti

on de

sign.

Page 69: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 70: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 71: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 72: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent
Page 73: SW 170TH AVENUE / SW MERLO ROAD CONCEPTUAL DESIGN … · 2015. 7. 8. · 02 PLANNING PROCESS 11 Tualatin Hills Nature Park: Currently the park has many old trees growing adjacent