This document summarizes Public Workshop #2 that was held in October 2010 to discuss corridor design for a new transportation project. The meeting agenda covered why the project was needed due to expected population growth and congestion. It discussed corridor alignment and streetscape goals, including improving mobility while minimizing environmental impacts. The document provided an overview of roadway design basics like horizontal and vertical alignment, cross-sections, and intersections. It also reviewed opportunities and constraints identified through stakeholder interviews and existing conditions reports. Attendees were asked to provide feedback on potential new corridor alignments using a roadway design tool.

1. Public Workshop #2October 2010

2. 2Meeting AgendaWhy are we here? Corridor Design 101 Alignments and StreetscapesOpportunities and Constraints Future Plans Workshop – 2 topics Alignments and Streetscapes

3. Why here? Why now? (See Project YouTube Video)

4. Purpose of This ProjectAddress corridor congestion and safety problems Serve future north-south trafficServe expected population growth in the areaDamascus Happy Valley Pleasant Valley Plan area GreshamServe the growing demand for regional travel

5. Corridor Alignment GoalsImprove mobility for:Through traffic Local community Freight trafficMinimize impacts to:Environmental resources Cultural resourcesSocial Provide flexibility for:Changing socio-economic conditions Development opportunities

6. Streetscape GoalsProvide an aesthetically pleasing design. . . That supports the character of the adjoining land usesThat preserves rural characterIntegrate “green streets” design with the natural features Improve safety for all users Support healthy and walkable communities

7. Project ProcessWE ARE HERE

8. 8Alternatives Development Process

9. Corridor Design 101Roadway Design BasicsHorizontal alignment Vertical alignmentRoadway cross-sectionsIntersection treatmentsIntersection spacing

10. Horizontal AlignmentMaximum degree of curve based on speed

11. Vertical AlignmentMaximum Roadway Grades8% for arterial roadways12% for collector/local roadways

12. Roadway ProfileSight distance requirementsVertical curve design

13. Roadway Cross-SectionsLane width requirements Travel lane – 11-12 feet

14. Center turn lane – 12-14 feet

15. Bike lanes – 6 feet on both sides

16. Sidewalks – 6-8 feet

17. Landscape strip – 5-7 feetSource: City of Happy Valley TSP

18. Roadway Cross SectionsTypical 3-lane arterial roadwaySource: City of Happy Valley TSP

19. Other Streetscape FeaturesDrainage considerations

20. Other Streetscape FeaturesRetaining wall to minimize impacts

21. Streetscape ExamplesSE 172nd Avenue (South of Sunnyside)

22. Streetscape ExamplesSW Walker Road

23. Streetscape ExamplesSW Kruse Way

24. Intersection OptionsTraffic signalsRoundaboutsStop signs

25. Intersection Spacing Minimum Intersection SpacingArterial & collectors intersections – 1,000 feet

26. Local street intersections – 500 feetCorridor Opportunities and ConstraintsDiscussed in Stakeholder interviewsMemos on existing conditionsMemos on projected future conditions

27. 23Future Transportation Conditions -- 2035Projections in Project Study Area Households grow by more than 300%

28. Jobs grow by 1,200%

29. Virtually all intersections fail during peak hoursProjected Average Daily Traffic (ADT)16,000 vehicles/day (south of Foster Rd)

30. 25,000 vehicles/day (north of Sunnyside Rd) 24Existing Transportation ConditionsTraffic volumes172nd 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 levelsThere are no bike lanes or sidewalks

31. Topography

32. 26Natural Resources

33. Existing Cross-Section172nd Avenue

34. Existing Cross-Section190th Avenue

35. 29Other Opportunities and Constraints10 historical resources eligible for National Register of Historic PlacesGenerally located along Foster RdNo recorded archaeological sites

36. Future Plans for CorridorRegional Transportation System Plan Local Transportation System PlansLocal Comprehensive Plans 30

37. 31Planned Transportation Network