The Sumner Tunnel in Boston will be completely closed for approximately 8-weeks beginning on July 5, 2023.
The closure will be seven days a week, from Wednesday, July 5 through Thursday, August 31 and is part of an ongoing Massachusetts Department of Transportation (MassDOT) tunnel restoration project.
These closures will impact regional traffic and Logan Airport. Travelers are encouraged to Ditch the Drive and use alternative modes of transportation.
MassDOT has created a map of safe, efficient commute options while the tunnel is closed. Use MassDOT 511 to help review traffic conditions, and the MBTA Trip Planner to plan public transit trips.
For weekly project email updates, travel options, and construction progress sign up here. For questions, email the project team at Sumner100@dot.state.ma
After nearly 100 years of service, the Sumner Tunnel (Route 1A South) needs significant improvements. MassDOT will be working on tunnel safety, the roadway surface, the tunnel ceiling, lighting & security systems, and cell phone, GPS, and radio service inside the tunnel. Full closure of the tunnel is needed to get this work done.
A second full closure is planned next summer from July 2024 through August 2024.
Please note: The Sumner Tunnel will be open on July 1-4 for holiday travel.