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Public Workshop #2

Public Workshop #2






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    Public Workshop #2 Public Workshop #2 Presentation Transcript

    • Public Workshop #2
      October 2010
    • 2
      Meeting Agenda
      Why are we here?
      Corridor Design 101
      Alignments and Streetscapes
      Opportunities and Constraints
      Future Plans
      Workshop – 2 topics
      Alignments and Streetscapes
    • Why here? Why now?
      (See Project YouTube Video)
    • Purpose of This Project
      Address corridor congestion and safety problems
      Serve future north-south traffic
      Serve expected population growth in the area
      Happy Valley
      Pleasant Valley Plan area
      Serve the growing demand for regional travel
    • Corridor Alignment Goals
      Improve mobility for:
      Through traffic
      Local community
      Freight traffic
      Minimize impacts to:
      Environmental resources
      Cultural resources
      Provide flexibility for:
      Changing socio-economic conditions
      Development opportunities
    • Streetscape Goals
      Provide an aesthetically pleasing design. . .
      That supports the character of the adjoining land uses
      That preserves rural character
      Integrate “green streets” design with the natural features
      Improve safety for all users
      Support healthy and walkable communities
    • Project Process
    • 8
      Alternatives Development Process
    • Corridor Design 101
      Roadway Design Basics
      Horizontal alignment
      Vertical alignment
      Roadway cross-sections
      Intersection treatments
      Intersection spacing
    • Horizontal Alignment
      Maximum degree of curve based on speed
    • Vertical Alignment
      Maximum Roadway Grades
      8% for arterial roadways
      12% for collector/local roadways
    • Roadway Profile
      Sight distance requirements
      Vertical curve design
    • Roadway Cross-Sections
      Lane width requirements
      • Travel lane – 11-12 feet
      • Center turn lane – 12-14 feet
      • Bike lanes – 6 feet on both sides
      • Sidewalks – 6-8 feet
      • Landscape strip – 5-7 feet
      Source: City of Happy Valley TSP
    • Roadway Cross Sections
      Typical 3-lane arterial roadway
      Source: City of Happy Valley TSP
    • Other Streetscape Features
      Drainage considerations
    • Other Streetscape Features
      Retaining wall to minimize impacts
    • Streetscape Examples
      SE 172nd Avenue (South of Sunnyside)
    • Streetscape Examples
      SW Walker Road
    • Streetscape Examples
      SW Kruse Way
    • Intersection Options
      Traffic signals
      Stop signs
    • Intersection Spacing
      Minimum Intersection Spacing
      • Arterial & collectors intersections – 1,000 feet
      • Local street intersections – 500 feet
    • Corridor Opportunities and Constraints
      Discussed in
      Stakeholder interviews
      Memos on existing conditions
      Memos on projected future conditions
    • 23
      Future Transportation Conditions -- 2035
      Projections in Project Study Area
      • Households grow by more than 300%
      • Jobs grow by 1,200%
      • Virtually all intersections fail during peak hours
      Projected Average Daily Traffic (ADT)
      • 16,000 vehicles/day (south of Foster Rd)
      • 25,000 vehicles/day (north of Sunnyside Rd)
    • 24
      Existing Transportation Conditions
      Traffic volumes
      172nd Avenue: 8,500 vehicles /day (near Hemrick Rd)
      Foster Road : 7,500 vehicles /day (near Cheldelin Rd)
      SE Sunnyside Road: 9,000 vehicles /day (near 172nd Ave)
      All intersections operate acceptably except Foster Road/172nd Avenue (LOS F)
      Intersection crash rates are within normal levels
      There are no bike lanes or sidewalks
    • Topography
    • 26
      Natural Resources
    • Existing Cross-Section
      172nd Avenue
    • Existing Cross-Section
      190th Avenue
    • 29
      Other Opportunities and Constraints
      10 historical resources eligible for National Register of Historic Places
      Generally located along Foster Rd
      No recorded archaeological sites
    • Future Plans for Corridor
      Regional Transportation System Plan
      Local Transportation System Plans
      Local Comprehensive Plans
    • 31
      Planned Transportation Network
    • Planned Transportation Network (north)
    • Planned Transportation Network (south)
    • Future Land Use
    • 35
      Now Let’s Create Some Corridor Design Concepts…
      Use the Roadway Design Tool to sketch new road alignments on the base maps.
    • Comment Sheets
      Please be sure to document your feedback!
    • Thanks!