Sumner Tunnel: Overnight full closure on the evenings of April 30 and May 1

Department of Transportation - East Boston notice

BOSTON – The Massachusetts Department of Transportation (MassDOT) has announced that the Sumner Tunnel in Boston will be closed to all vehicular traffic during the overnight hours of 11 p.m., through 5 a.m., on the evening of Tuesday, April 30, as well as the evening of Wednesday, May 1.

These off-peak overnight closures are necessary to allow crews to safely and effectively conduct routine sign installation and roadway repairs. During these overnight hours, all vehicular traffic seeking to access the Sumner Tunnel wi

ll be detoured to the Ted Williams Tunnel.

Drivers traveling through the affected areas should expect delays, reduce speed, and use caution. All scheduled work is weather dependent and/or may be impacted due to an emergency situation.

For more information on traffic conditions travelers are encouraged to:

  • Dial 511 and select a route to hear real-time conditions.
  • Visit, a website which provides real-time traffic and incident advisory information, and allows users to subscribe to text and email alerts for traffic conditions.
  • Follow MassDOT on Twitter @MassDOT to receive regular updates on road and traffic conditions.
  • Download MassDOT’s GoTime mobile app and view real-time traffic conditions before setting out on the road.