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WM10 Making Connectivity a Part of Your Smart Growth Washington Chapter APA October 2010
CONNECTIVITY’S GREATEST  HITS
Love Thy Neighbor
Ross Racine
Ross Racine
Driving & the Built Environment – the 5 D’s Density           Population & employment by geographic unit (e.g., per square mile, per developed acre). Diversity       Mix of land uses, typically residential and commercial development, and the degree to which they are balanced in an area (e.g., jobs–housing balance). Design          Neighborhood layout and street characteristics, particularly connectivity, presence of sidewalks, and other design features (e.g., shade, scenery, presence of attractive homes and stores) that enhance the pedestrian- and bicycle-friendliness of an area. Destination accessibility                                    Ease or convenience of trip destinations from point of origin, often measured at the zonal level in terms of distance from the central business district or other major centers. Distance to transit                                    Ease of access to transit from home/work (e.g., bus/rail stop within ¼ to ½ mile). Ewing & Cervero, JAPA, Summer 2010 | TRB Report #298
DOT – HUD – EPA  Partnership for Sustainable Communities ,[object Object]
Improve access to affordable housing
More transportation options
Lower transportation costs while protecting environment
Partnership Agreement
Develop livability measures and tools
Undertake joint research & data collection,[object Object]
Los Angeles and San Diego Counties
Applied 9 measures of street connectivity
Identified positive correlation between connected street system and the propensity and duration of leisure walking and cycling,[object Object]
Current Planning Guides for Connectivity
Rail Station Connectivity –Comparing Metrics Before After Change Parcel Impact Route Directness Index 2,300 0.63 0.77 23% Intersection Density 146 1.4% -- 144 Link-Node Ratio -- 1.29 1.30 < 1% Walk Score -- -- -- 89 of 100

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Making Connectivity a Part of Your Smart Growth

  • 1. WM10 Making Connectivity a Part of Your Smart Growth Washington Chapter APA October 2010
  • 3.
  • 4.
  • 5.
  • 6.
  • 10.
  • 11. Driving & the Built Environment – the 5 D’s Density Population & employment by geographic unit (e.g., per square mile, per developed acre). Diversity Mix of land uses, typically residential and commercial development, and the degree to which they are balanced in an area (e.g., jobs–housing balance). Design Neighborhood layout and street characteristics, particularly connectivity, presence of sidewalks, and other design features (e.g., shade, scenery, presence of attractive homes and stores) that enhance the pedestrian- and bicycle-friendliness of an area. Destination accessibility Ease or convenience of trip destinations from point of origin, often measured at the zonal level in terms of distance from the central business district or other major centers. Distance to transit Ease of access to transit from home/work (e.g., bus/rail stop within ¼ to ½ mile). Ewing & Cervero, JAPA, Summer 2010 | TRB Report #298
  • 12.
  • 13. Improve access to affordable housing
  • 15. Lower transportation costs while protecting environment
  • 18.
  • 19. Los Angeles and San Diego Counties
  • 20. Applied 9 measures of street connectivity
  • 21.
  • 22. Current Planning Guides for Connectivity
  • 23. Rail Station Connectivity –Comparing Metrics Before After Change Parcel Impact Route Directness Index 2,300 0.63 0.77 23% Intersection Density 146 1.4% -- 144 Link-Node Ratio -- 1.29 1.30 < 1% Walk Score -- -- -- 89 of 100
  • 25. Basic RDI Calculation A B straight-line distance “A” actual route distance “B” RDI = A / B
  • 26. RDI Example: Pre Neighborhood Connector 375 ft 1850 ft RDI: .20 1850 ft .20 375 ft Route Directness Index Crow Flight / Walk Distance = RDI Existing Shared-Use Path
  • 27. RDI Example: Post Neighborhood Connector 375 ft RDI: .83 450 ft .83 375 ft 450 ft Route Directness Index Crow Flight / Walk Distance New Neighborhood Connectors = RDI Existing Shared-Use Path
  • 29. Connectivity & Smart Growth Panel Dan Penrose, AICP City of Lakewood Sophie Stimson City of Olympia Thera Black Thurston Regional Planning Council Chris Comeau, AICP City of Bellingham
  • 30.
  • 31. M.F. DU’s within 15-minute walk-to-school, by Household Income and Auto Ownership
  • 34.

Editor's Notes

  1. Circle Drive
  2. Fractal Acres
  3. Fairmeadow Estates: Palo Alto