This document summarizes a study of the performance and safety of Interstates 89 and 189 in Chittenden County under existing conditions and in twenty years. This study was initiated through the FY 1996 Unified Planning Work Program (UPWP) of the Chittenden County Metropolitan Planning Organization (CCMPO). It responds to a 1994 Vermont State Legislature directive to the Vermont Agency of Transportation to study congestion and the effect of proposed interchanges on I-89 in Chittenden County.

Supplemental Draft Environmental Impact Statement (SDEIS) for an Interstate 89 interchange in Bolton, VT at approximately mile marker 69.00 for the northbound access ramps and mile marker 71.00 for the southbound access ramps.

The impetus for initiating this project is due to an unsafe condition which has developed during the morning peak hour traffic period between approximately 7:30 a.m. and 8:30 a.m. at this I-89 Interchange ramp west bound towards Burlington (Ramp C). This study is to determine the causes of, and possible solutions to the long queue that develops, creating a back-up in the travel lanes on I-89.

Draft Environmental Impact Statement (DEIS) for an Interstate 89 interchange in Bolton, VT at approximately mile marker 69.00 for the northbound access ramps and mile marker 71.00 for the southbound access ramps.

The purpose of this study is to conduct economic benefit-cost analyses of interchange improvements at four locations on Interstate 89 in Chittenden County , Vermont.

This report is concerned with the specific alignment of a small portion of the entire Interstate network in Vermont and will of necessity discuss the local as well as the national aspects. The recommended plan will furnish access to the Interstate network for traffic generated in the Area and provide quick and safe routes for interstate traffic which has this Area as its destination. In addition, this plan will relieve local traffic and provide a by-pass route for traffic to pass through to other regions. This is in accordance with the statement contained in the Federal Highway Act of 1956; That local needs to the extent practicable, suitable and feasible be given equal consideration with the needs of interstate commerce...