2026 Motor Vehicle Excise Tax

2026 Motor Vehicle Excise bills will be issued on February 20th. Please do not ignore this bill! If you feel the Excise was issued in error, please contact the Treasurer’s Office.

2026 Annual Census

The Annual Census, also known as the Annual Street Listing, has been mailed to all Williamstown residents. Please return the completed form promptly.

Main Street Bridge Project Update

The Main Street bridge over Hemlock Brook has been reconstructed by MassDOT and is re-opened to traffic. In the Spring, plantings will be installed, and some minor items will be buttoned up. Current completion date is May 20, 2026.

Five Corners Roundabout Project

This MassDOT project converted the stop-controlled intersection of Route 7 and Route 43 to a roundabout. Much of the work on this project is complete and will continue in the Spring.