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Exit 17 Transportation Plan

Exit 17 Transportation Plan. Prepared for: Town of Colchester and CCMPO August 22, 2006 Selectboard Meeting. Presentation Overview. Study Purpose/Study Area Traffic Forecasts How traffic projections were developed Effect of Circ and Milton Exit Design Alternatives

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Exit 17 Transportation Plan

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  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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