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

Exit 17 Transportation Plan August 22, Presentation Overview 1.Study Purpose/Study Area 2.Traffic Forecasts –How traffic projections were developed –Effect of Circ and Milton Exit 3.Design Alternatives 4.Phasing Plan & Recommendations 5.Next Steps

Exit 17 Transportation Plan August 22, 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.

Exit 17 Transportation Plan August 22, 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

Exit 17 Transportation Plan August 22, 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

Exit 17 Transportation Plan August 22, Twenty-Year Traffic Projections 42% Increase in Through Traffic + Phase 2 Dev. Traffic

Exit 17 Transportation Plan August 22, Effect of Circ and Milton Exit

Exit 17 Transportation Plan August 22, Design Alternatives Assumptions Phase 2 Land Use Circ. Highway Complete to VT 127 Include New Local Roads No Milton Exit

Exit 17 Transportation Plan August 22, Exit 17-Chimney Corners Alt 1

Exit 17 Transportation Plan August 22, Exit 17-Chimney Corners Alt 2-A

Exit 17 Transportation Plan August 22, Exit 17-Chimney Corners Alt 2-B

Exit 17 Transportation Plan August 22, Exit 17-Chimney Corners Alt 2-C

Exit 17 Transportation Plan August 22, Exit 17 Alternative 3

Exit 17 Transportation Plan August 22, Exit 17 Alt. 4: Single Point Urban Interchange

Exit 17 Transportation Plan August 22, Exit 17 Alt 5: Tight Diamond

Exit 17 Transportation Plan August 22, Exit 17-Chimney Corners Alts Comparison

Exit 17 Transportation Plan August 22, US 2 – Jasper Mine Road

Exit 17 Transportation Plan August 22, US 7 - Brentwood

Exit 17 Transportation Plan August 22, US 7 – Arbor Garden

Exit 17 Transportation Plan August 22, Total Costs

Exit 17 Transportation Plan August 22, Phasing Plan

Exit 17 Transportation Plan August 22, 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 Transportation Planning Project Definition / Scoping Environmental Documentation Final Eng - ROW Construction Next Step This Study

Exit 17 Transportation Plan August 22, 2006 Appendices

Exit 17 Transportation Plan August 22, About Roundabouts Key Features –Yield at entry –Deflection created by center island –Flare at approach –Design speed between mph Not a “Traffic Circle” or “Rotary” Rural Location Urban or Village Location

Exit 17 Transportation Plan August 22, No ChangeWith Circ With Circ and Milton Exit 2025 Congestion – Signalized Intersections Includes Background Growth and Traffic from Phase 2

Exit 17 Transportation Plan August 22, Congestion – Stop Controlled No ChangeWith Circ With Circ and Milton Exit Includes Background Growth and Traffic from Phase 2