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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
http://slidepdf.com/reader/full/ws2-presentation-draft-9-30-10 2/37
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Meeting AgendaMeeting Agenda
1. Background
2. Corridor Design 101
3. Opportunities and Constraints
4. Workshop
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Project BackgroundProject Background
YouTube Video
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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.
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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.
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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.
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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.
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Project ProcessProject Process
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Alternatives Development ProcessAlternatives Development Process
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Alternatives Development (Continued)Alternatives Development (Continued)
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Corridor Design 101Corridor Design 101
Roadw ay Des ign Bas ics:
Horizontal Alignment
Vertical Alignment
Roadway Cross Sections
Intersection Treatments
Intersection Spacing
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Horizontal Alignment DesignHorizontal Alignment Design
Maximum degree of curve based on speed
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Vertical AlignmentVertical Alignment
Maximum Roadway Grades:
8% for arterials,
12% for collector/local roadways
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Roadway Profile DesignRoadway Profile Design
Sight distancerequirements
Vertical curve design
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Roadway Cross SectionsRoadway Cross Sections
Source: City of Happy Valley TSP
Typical 3-Lane Arterial
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Other Streetscape FeaturesOther Streetscape Features
Drainage Considerations
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Other Streetscape FeaturesOther Streetscape Features
Retaining wall to minimizeimpacts
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Example Cross SectionsExample Cross Sections
Photos to be added
– 172nd Ave (south)
– Sunnyside Rd
– Kruse Way – Others…
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Intersection TreatmentsIntersection Treatments
Roundabouts
TrafficSignals
Stop Sign Control
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Intersection SpacingIntersection Spacing
Minimum Intersection Spacing
– Arterial & Collectors Intersections – 1,000 ft
– Local Street Intersections – 500 ft
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Opportunities and ConstraintsOpportunities and Constraints
Stakeholder Interviews
Existing Conditions
Projected Future Conditions
Other Planned Transportation Improvements
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Stakeholder Interview SummaryStakeholder Interview Summary
Key t hem es:
Respect Property Rights
Preserve Rural Character
Reduce Congestion
Improve Safety
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Existing Cross SectionExisting Cross Section
172nd Avenue
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Existing Cross SectionExisting Cross Section
190th Avenue
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Existing TopographyExisting Topography
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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)
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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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
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Planned Transportation Network (north)Planned Transportation Network (north)
8/8/2019 WS#2 Presentation (Draft 9-30-10)
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Future Land UseFuture Land Use
T O B E
U P D
A T E
D