Born out of the I-89 2050 Study, this assessment reviewed two interchange concepts, one in Milton near the West Milton Road bridge over I-89, and one in Bolton near the Bolton Valley Access Road. Both locations have previously underwent some form of study. However, the previous studies date back to the late 1980s/early 1990s. This assessment served to review modern geometric design standards and environmental requirements as they pertain to each conceptual interchange.

This document summarizes existing travel conditions analysis, findings and recommendations for setting speed limits on Bolton Valley Access Road and Duxbury Road.

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.

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.