Sumner Tunnel Centennial Restoration Project

View all


Built in the 1930s, the Sumner Tunnel is the first traffic tunnel in Massachusetts and one of the oldest in the nation. Running over a mile under the Boston Harbor, the Sumner remains an essential roadway for residents and commuters. It links East Boston with the rest of the city and provides direct access from Logan Airport – in a real sense, opening the world to Boston.

Now, after nearly a century of service, it’s time for an upgrade. At this point, we’re well beyond patches and repairs: the only way to keep the Sumner Tunnel in service is with a top-to-bottom restoration. With this work, we expect to keep the Sumner Tunnel in service for another century or more.

After a thorough review of construction plans and impact reports, it is clear that the best way to move forward is a four-month shutdown in 2023, with weekend closures before and after the full shutdown to complete the project. This is a fast schedule that involves project-acceleration techniques and economic incentives to keep things on track.

For more information, please visit: https://www.mass.gov/sumner-tunnel-restoration-project