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From MassDOT: Sumner Tunnel Closure

Posted on: July 5, 2023 - 4:06pm
Sumner Tunnel Map

The Massachusetts Department of Transportation is closing the Sumner Tunnel/Route 1A South for 8 weeks from July 5, 2023, to August 31, 2023. There will be impacts to regional travel. Learn more about your travel options by visiting mass.gov/sumner-tunnel. Sign up for real time traffic conditions by visiting mass511.com.

How will my travel be affected?

Sumner Tunnel closures will affect travelers coming from Logan Airport/East Boston to Boston and points north.

If traveling to Logan Airport/ East Boston, continue using the Callahan Tunnel or the Ted Williams Tunnel.

Add additional travel time to both trips in case of congestion. If you are traveling from the airport, expect delays.

Traveling to Logan Airport and East Boston:

Roadways leading to Logan Airport and East Boston are open and available for travel during the Sumner Tunnel/Route 1A South closures. Drivers should follow their normal route. From Newburyport: Take I-95 to Route 1 south, and then take Route 60 to Route 16

Travelers traveling towards East Boston should anticipate heavier traffic volumes during closures.

Traveling from Logan Airport and East Boston to Newburyport: Take MA-1A North to US-1 North

Logan Airport travel tips

To reduce traffic congestion during tunnel closures, MassDOT encourages those traveling to or from Logan Airport to leave their cars at home and explore Massport's list of transportation options to and from Logan, which include: the Blue Line or Silver Line, the Logan Express, the Logan Water Taxi, or the Hingham/Hull Ferry.

Vehicles leaving Logan Airport should be aware of ongoing traffic impacts during the Sumner Tunnel closures. Periodically, Massport will close the ramp connecting the airport to Ted Williams Tunnel and direct traffic to the Sumner Tunnel to minimize the backup on the mainline of I-90. Additionally, vehicles traveling on Route 1A/I-90 westbound towards Ted Williams Tunnel should expect one less through lane on I-90 westbound. On Saturdays and Sundays between 10 a.m. and 9 p.m. one lane is converted to a merge lane to help vehicles leaving Logan Airport to freely join the I-90 mainline. While these changes do not eliminate congestion, they are implemented in an effort to balance traffic volumes during weekend closures of the Sumner Tunnel and provide safer driving conditions inside the Ted Williams Tunnel.