foster road draft cross-section alts+tradeoffs

7/30/2019 Foster Road DRAFT Cross-Section Alts+Tradeoffs

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FOSTER ROAD CROSS SECTIONDRAFT ALTERNATIVESThe graphics illustrated below display different cross sectional alternatives for the three

representative segments of inner Foster Road. These segments include SE 52nd Avenue to SE 72ndAvenue, SE 72nd Avenue to SE 80th Avenue, and SE 84th Avenue to the Couplet. Each cross

section alternative is a typical block for its respective segment and is supported with a table that

conveys at a broad level modal tradeoffs as design features within the cross section that are either

introduced, removed, moved, expanded, or reduced. Each segment includes at least one cross

section option incorporating key values identified by the community and staff, including:

A 4-lane option A 3-lane option A 2-lane option Conventional bike lanes in both directions Separated bike facilities in both directions


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FOSTER ROAD STREETSCAPE AND TRANSPORTATION PLAN UPDATE | DRAFT CROSS SECTION

ALTERNATIVES

Portland Bureau of Transportation

SE 52nd Avenue to SE 72nd Avenue: Option 1

Element Tradeoff

Reduces number of travel lanes from four to two for motorized traffic.Center turn lane provides a dedicated space to separate left turning vehicles from through

traffic.Center turn lane offers opportunities for raised medians with landscape and manages land use

access.Existing sidewalk widths are maintained. Curb extensions could be provided.Enough furniture zone in sidewalks to introduce landscaping, stormwater, and placemaking

features.

C d h l l h ll l h h l C


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ALTERNATIVES



Element Tradeoff

Maintains four travel lanes for motorized traffic.No center turn lane is provided.Requires narrowing the sidewalk to 12 feet. Curb extensions could be provided.Reduces furniture zone and the ability to introduce some types of landscaping, stormwater,

and placemaking features.

Cross section maintains multiple threat collision potential.Six-foot bike lanes are provided. No separation from motorized traffic or on-street parking


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to two for motorized traffic, becoming three duringpeak times (two in the peak direction).

Center turn lane provides a dedicated space to separate left turning vehicles from throughtraffic.

Center turn lane offers opportunities for raised medians with landscape and manages land useaccess.

Providing additional lane capacity for all modes requires narrowing the sidewalk to 14 feet.Slightly reduces furniture zone and the ability to introduce some types of landscaping,

stormwater and placemaking features


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ALTERNATIVES



Element Tradeoff



Center turn lane offers opportunities for raised medians with landscape and manages land useaccess.

Providing additional lane capacity for all modes requires narrowing the sidewalk to 14 feet.Slightly reduces furniture zone and the ability to introduce landscaping, stormwater, and

placemaking features


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to two for motorized traffic.No center turn lane is provided.17-foot sidewalks are maintained.Enough furniture zone to introduce wider range of landscaping, stormwater, and placemaking

features.

Cycle track configuration cannot support curb extensions.Wide cycle tracks are provided in both directions, each with a marked buffers with separation

from parking.


7/18


ALTERNATIVES


SE 72nd Avenue to SE 80th Avenue: Option 1

Element Tradeoff

Reduces number of travel lanes from four to two for motorized traffic.Center turn lane provides a dedicated space to separate left turning vehicles from through

traffic.

Center turn lane offers opportunities for raised medians with landscape and manages landuse access.

Requires narrowing the sidewalk to 10 feet, which reduces furniture zone and the ability tointroduce some types of landscaping, stormwater, and placemaking features.Cross section reduces multiple threat collision potential. Center turn lane can allow for wider

pedestrian refuge islands


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to two for motorized vehicles.Center turn lane provides a dedicated space to separate left turning vehicles from through

traffic.


13-foot sidewalks are maintained. Curb extensions could be provided on the side withparking.Limited furniture zone to introduce landscaping, stormwater, and placemaking features. C ti d i di t d th f ti d d lti l


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to two for motor vehicles.No center turn lane is provided.13-foot sidewalks are maintained. Curb extensions could be provided.Cross section reduces crossing distance, and therefore exposure time, and reduces multiple

threat collision potential.

Bikeway configuration can support curb extensions.Six-foot bike lanes are provided. No separation from motorized traffic or on-street parking


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ALTERNATIVES



Element Tradeoff




13-foot sidewalks are maintained.Limited furniture zone to introduce landscaping, stormwater, and placemaking features. Cross section maintains multiple threat collision potential during peak times Center turn lane


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ALTERNATIVES


SE 84th Avenue to Couplet: Option 1

Element Tradeoff

Maintains four-lane cross section.No center turn lane is provided.Sidewalks are expanded to 10-feet.Limited furniture zone to introduce landscaping, stormwater, and placemaking features.Cross section maintains multiple threat collision potential during peak times.No bicycle facilities are provided.


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ALTERNATIVES



Element Tradeoff

Maintains four-lane cross section.No center turn lane is provided.Five-foot sidewalk widths remain unchanged.No space for a defined furniture zone or the ability to introduce landscaping, stormwater, and

placemaking features without dedication of right-of-way from adjacent properties.

Cross section maintains multiple threat collision potentialNarrow bike lanes are provided. N ti f t i d t ffi


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to two for motorized vehicles.Center turn lane provides a dedicated space to separate left turning vehicles from through

traffic.


Five-foot sidewalk widths remain unchanged. Curb extensions could be provided on the sidewith parking.No space for a defined furniture zone or the ability to introduce landscaping, stormwater, and

placemaking features without dedication of right of way from adjacent properties


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ALTERNATIVES



Element Tradeoff

Reduces number of travel lanes from four to three for motorized traffic.Center turn lane provides a dedicated space to separate left turning vehicles from through

traffic.


Five-foot sidewalk widths remain unchanged. Currb extensions could be provided.No space for a defined furniture zone or the ability to introduce landscaping, stormwater, and



15/18


ALTERNATIVES



Element Tradeoff

Reduces number of lanes from four to two for motorized vehicles.No center turn lane is provided.Five-foot sidewalk widths remain unchanged. Curb extensions could be provided.No space for a defined furniture zone or the ability to introduce landscaping, stormwater, and


Cross section reduces crossing distance, and therefore exposure time, and reduces multiplethreat collision potential.

Conventional bike lanes are provided


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FOSTER ROAD STREETSCAPE AND TRANSPORTATION PLAN UPDATE | DRAFT CROSS SECTION ALTERNATIVES


Nelson\Nygaard Consulting Associates Inc. | 16

SUMMARY OF TRADEOFFS BY SEGMENT

Segment 1: SE 52nd Ave to SE 72nd Ave

OptionCurb-to-

Curb Width

Sidewalk

Width

Bike Facilities

(both directions)Parking*

Travel Lanes

(both directions)

Center

Turn lane

Streetcar

ready?**

Moves

curb?***

Existing 60' 13' - 17' None Allowed both sides 4 lanes None No NA

Option 1 60' 17' Yes Allowed both sides 2 lanes Yes Yes No

Option 2 70' 12' Yes Allowed both sides 4 lanes None Yes Yes

Option 3 66' 14' Yes, with buffers Protime both sides2 lanes

(3 peak only)Yes No Yes

Option 4 66' 14' Yes, with buffers Protime both sides2 lanes

(3 peak only)Yes Yes Yes

Option 5 60' 17' Yes, cycletracks Allowed both sides 2 lanes None Yes No

*Protime parking: parking is allowed 22 hours a day. Parking lane is a travel lane during peak travel times (7-9 AM Westbound, 4-6 PM Eastbound).

** Streetcar requires an 11' travel lane. If adjacent to parking, the parking lane must be 8'

***Likely to be determined on a block-by-block basis given varying sidewalk widths along the corridor.


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Segment 2: SE 72nd Ave to SE 80th Ave

OptionCurb-to-

Curb Width

Sidewalk

Width

Bike Facilities


Travel Lanes

(both directions)

Center

Turn lane

Streetcar

ready?**

Moves

curb?***

Existing 50' 13' NoneAllowed EB, WB

protime3 lanes

(4 peak only)None No No

Option 1 56' 10' Yes, with buffers Allowed EB only 2 lanes Yes Yes Yes

Option 2 50' 13' Yes Allowed EB only 2 lanes Yes Yes No

Option 3 50' 13' Yes Allowed both sides 2 lanes None Yes No

Option 4 50' 13' None Protime both sides2 lanes

(3 peak only)Yes No No



***Likely to be determined on a block-by-block basis given varying sidewalk widths along the corridor.


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Segment 3: SE 84th Ave to Couplet

OptionCurb-to-

Curb Width

Sidewalk

Width

Bike Facilities


Travel Lanes

(both directions)

Center

Turn lane

Streetcar

ready?**

Moves

curb?***

Existing 50' 5' NoneAllowed EB, WB

protime3 lanes (4 peak

only)None No No

Option 1 40' 10' None Protime both sides2 lanes (3 peak

only)None No Yes

Option 2 50' 5' Yes None 4 lanes None No No

Option 3 50' 5' Yes EB side only 2 lanes Yes No No

Option 4 50' 5' None Allowed both sides 2 lanes Yes Yes No

Option 5 50' 5' Yes Allowed both sides 2 lanes None Yes No



***Likely to be determined on a bl ock-by-block basis given varying sidewalk widths along the corridor.

foster road draft cross-section alts+tradeoffs

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