Sumner Tunnel Closure Information
After nearly 100 years of service, the Sumner Tunnel (Route 1A South) needs a full upgrade. The full upgrade includes improving tunnel safety, the roadway surface, tunnel ceiling, lighting and security systems, and cell phone, GPS, and radio service inside the tunnel. Full closures of the tunnel are needed to upgrade all these items.
Once these upgrades are complete, the Sumner Tunnel should remain in operation for another 100 or more years. There will be two eight-week full closures of the tunnel: the first full closure will be from July 5 to August 31, 2023. The second full closure will take place during the same timeframe in 2024. MassDOT encourages the public to plan ahead and learn more about other travel options. Click here to sign up for weekly project email updates for the latest on travel options and construction progress.
To subscribe to project emails follow these steps:
- Confirm your email and create a password
- Scroll down the next page to find and check off “Sumner Restoration Project”
- (Optional) sign up to receive updates for other projects.
Visit the project website to learn more: www.mass.gov/sumner-tunnel . If you have any questions or comments, email the project team at Sumner100@dot.state.ma.us.