Sumner Tunnel Centennial Restoration Project

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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.

The Sumner Tunnel will be closed seven days a week in the summer of 2024 from July to August. During this time, traffic will be diverted through other signed detour routes.

For more information, please visit: https://www.mass.gov/info-details/sumner-tunnel-restoration-project-details-and-closure-schedule