ws#2 presentation (draft 9-30-10)

8/8/2019 WS#2 Presentation (Draft 9-30-10)

http://slidepdf.com/reader/full/ws2-presentation-draft-9-30-10 1/37

Public Workshop #2Public Workshop #2Octob er 20 10



2

Meeting AgendaMeeting Agenda

1. Background

2. Corridor Design 101

3. Opportunities and Constraints

4. Workshop



Project BackgroundProject Background

YouTube Video



Draft Purpose StatementDraft Purpose Statement

The pu r pose o f t h i s p r o j ect i s t o…

Address corridor congestion and safety problems.

Serve future north-south traffic.Serve expected population growth in the area.

– Damascus,

– Happy Valley,– Pleasant Valley Plan Area and

– Gresham,

Serve the growing demand for regional travel.



Project Goals & ObjectivesProject Goals & Objectives

Cor r ido r A l ign m en t Goa ls

1. Improve mobility for:

– Through traffic– Local community,

– Freight movement.

2. Minimize impacts to:

– Environmental resources,

– Cultural resources, and

– Social

3. Provide flexibility for:– Changing socio-economic conditions,

– Development opportunities.



Goals & Objectives (cont.)Goals & Objectives (cont.)

St r eet scape Goals

4. Provide a unique, aesthetically pleasing design thatpreserves rural character.

5. Integrate “green streets” design with the natural features.

6. Improve safety for all users.

7. Support healthy and walkable communities.



Goals & Objectives (cont.)Goals & Objectives (cont.)

Land Use & Transpor t a t i on I n t eg r a t i on Goal s

8. Protect the long-term function of the corridor.

9. Ensure that the corridor plan supports local economicdevelopment.

I m p lem en t at i on Go al s

10. Ensure effective project implementation by selecting aplan that is fundable and can be built in phases.



Project ProcessProject Process



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Alternatives Development ProcessAlternatives Development Process



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Alternatives Development (Continued)Alternatives Development (Continued)



Corridor Design 101Corridor Design 101

Roadw ay Des ign Bas ics:

Horizontal Alignment

Vertical Alignment

Roadway Cross Sections

Intersection Treatments

Intersection Spacing



Horizontal Alignment DesignHorizontal Alignment Design

Maximum degree of curve based on speed



Vertical AlignmentVertical Alignment

Maximum Roadway Grades:

8% for arterials,

12% for collector/local roadways



Roadway Profile DesignRoadway Profile Design

Sight distancerequirements

Vertical curve design



Roadway Cross SectionsRoadway Cross Sections

Design lane width requirements• Travel lane – 11-12’

• Center turn lane – 12-14’• Bike lanes - 6’ both sides

• Sidewalks – 6-8’

• Landscape Strip – 5-7’

Source: City of Happy Valley TSP



Roadway Cross SectionsRoadway Cross Sections

Source: City of Happy Valley TSP

Typical 3-Lane Arterial



Other Streetscape FeaturesOther Streetscape Features

Drainage Considerations



Other Streetscape FeaturesOther Streetscape Features

Retaining wall to minimizeimpacts



Example Cross SectionsExample Cross Sections

Photos to be added

– 172nd Ave (south)

– Sunnyside Rd

– Kruse Way – Others…



Intersection TreatmentsIntersection Treatments

Roundabouts

TrafficSignals

Stop Sign Control



Intersection SpacingIntersection Spacing

Minimum Intersection Spacing

– Arterial & Collectors Intersections – 1,000 ft

– Local Street Intersections – 500 ft



Opportunities and ConstraintsOpportunities and Constraints

Stakeholder Interviews

Existing Conditions

Projected Future Conditions

Other Planned Transportation Improvements



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Stakeholder Interview SummaryStakeholder Interview Summary

Key t hem es:

Respect Property Rights

Preserve Rural Character

Reduce Congestion

Improve Safety



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Existing Conditions Analysis Completed:Existing Conditions Analysis Completed:

Existing Transportation Conditions

Future Transportation Conditions

InfrastructureNatural Resources

Historical and Cultural Resources

Hazardous Materials

Socio Economic and Land Use



25

Existing Transportation Conditions AnalysisExisting Transportation Conditions Analysis

Current traffic volumes:

– 172nd Avenue: 8,500 vehicles per day (Near Hemrick Rd)

– Foster Road : 7,500 vehicles per day (Near Cheldelin Rd)

– SE Sunnyside Road: 9,000 vehicles per day (Near 172nd Ave)

All study intersections operate acceptably except

Foster Road/172nd Avenue (LOS F)

Intersection crash rates are within normal levels

No bike or sidewalk facilities



Existing Cross SectionExisting Cross Section

172nd Avenue



Existing Cross SectionExisting Cross Section

190th Avenue



Existing TopographyExisting Topography



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Natural ResourcesNatural Resources



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Historical and Cultural ResourcesHistorical and Cultural Resources

10 historical resources within the PSA eligible for NationalRegister of Historic Places

– Generally located along Foster Rd

No archaeological sites have been recorded within the PSA

The PSA has a low to moderate likelihood of containing

archaeological sites



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Future Transportation Conditions AnalysisFuture Transportation Conditions Analysis

2035 Projections in Project Study Area:

– Households forecast to grow by more than 300%

– Jobs forecast to grow by 1,200%

– Virtually all study area intersections will fail during peakhours

2035 Projected ADT

– 16,000 veh/day (south of Foster Rd)

– 25,000 veh/day (north of Sunnyside Rd)



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Future Transportation Conditions AnalysisFuture Transportation Conditions Analysis

– 172nd and 190th Avenue roadway cross-sectionswill require 3 to 5 lanes:

– 5 Lanes at South End– 3 Lanes at North End

– Ten intersections would require roundabouts or

traffic signals under current road network



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Planned Transportation NetworkPlanned Transportation Network



Planned Transportation Network (north)Planned Transportation Network (north)



Future Land UseFuture Land Use

T O B E

U P D

A T E

D



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Lets Create Some Corridor Design Concepts…Lets Create Some Corridor Design Concepts…

– Add image of design tool and base map

ws#2 presentation (draft 9-30-10)

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