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Transportation Plan Overview for Exit 17 Growth Center in Colchester - Selectboard Meeting

This presentation provides an overview of the transportation plan developed for the Exit 17 Growth Center. It outlines the study's purpose, the forecasted traffic projections, and the design alternatives considered in light of the impacts from the Circ Highway and Milton Exit. Recommendations for phasing the plan and the next steps are also included. The plan supports the implementation of a wastewater system and presents a comprehensive list of projects to accommodate anticipated growth in the area, aimed at enhancing traffic flow and community development.

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Transportation Plan Overview for Exit 17 Growth Center in Colchester - Selectboard Meeting

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Presentation Transcript

  1. Exit 17 Transportation Plan Prepared for: Town of Colchester and CCMPO August 22, 2006 Selectboard Meeting

  2. Presentation Overview • Study Purpose/Study Area • Traffic Forecasts • How traffic projections were developed • Effect of Circ and Milton Exit • Design Alternatives • Phasing Plan & Recommendations • Next Steps

  3. Study Purpose • To develop a transportation plan for the Exit 17 Growth Center that: • Assumes wastewater system is implemented; • Accounts for effect of Circ Highway and New Milton Interchange; and • Presents a comprehensive list of projects to accommodate desired growth.

  4. Study Area • Consistent with G-4 Zoning District • State Highways • Study Intersections • US 2/US 7 • Exit 17 Ramps • US 2/Jasper Mine • US 7/Park and Ride • US 7/Arbortech

  5. Twenty-Year Development Assumptions • Phase 1 (120,000 gpd) • 720 dwelling units • 275 ksf commercial • 1,270 vehicles/hour • Phase 2 (225,000 gpd) • 1,200 Dwelling Units • 460 ksf commercial • 2,100 vph • Full Development Potential • 1,300 Dwelling Units • 560 ksf commercial

  6. Twenty-Year Traffic Projections + 42% Increase in Through Traffic Phase 2 Dev. Traffic

  7. Effect of Circ and Milton Exit

  8. Design Alternatives Assumptions • Phase 2 Land Use • Circ. Highway Complete to VT 127 • Include New Local Roads • No Milton Exit

  9. Exit 17-Chimney Corners Alt 1

  10. Exit 17-Chimney Corners Alt 2-A

  11. Exit 17-Chimney Corners Alt 2-B

  12. Exit 17-Chimney Corners Alt 2-C

  13. Exit 17 Alternative 3

  14. Exit 17 Alt. 4: Single Point Urban Interchange

  15. Exit 17 Alt 5: Tight Diamond

  16. Exit 17-Chimney Corners Alts Comparison

  17. US 2 – Jasper Mine Road

  18. US 7 - Brentwood

  19. US 7 – Arbor Garden

  20. Total Costs

  21. Phasing Plan

  22. Transportation Planning This Study Project Definition / Scoping Next Step Environmental Documentation Final Eng - ROW Construction Recommendations & Next Steps • Conduct Project Definition Study for US 2/I-89 Ramps and US 2/US 7 • Evaluate Traffic Signals and Roundabouts • No Further Evaluation of Interchange Configuration • Construction in Two Phases • NB Off-Ramp and US 2/US 7 Together and First • SB Off-Ramp and Bridge Latter • Local Roads and Bridges • Obtain easements or ROW as developments occur

  23. Appendices

  24. About Roundabouts Rural Location • Key Features • Yield at entry • Deflection created by center island • Flare at approach • Design speed between 15-20 mph • Not a “Traffic Circle” or “Rotary” Urban or Village Location

  25. 2025 Congestion – Signalized Intersections With Circ and Milton Exit No Change With Circ Includes Background Growth and Traffic from Phase 2

  26. 2025 Congestion – Stop Controlled With Circ and Milton Exit No Change With Circ Includes Background Growth and Traffic from Phase 2

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