Reminder: The Sumner Tunnel closes at midnight for a month

The Sumner Tunnel will close at midnight and stay closed for the next month.

This installment of renovations to the tunnel, which carries traffic under Boston Harbor and connects East Boston and Logan Airport to downtown Boston, will last through Aug. 5.

Traffic will be diverted as a result for the next month, affecting travelers coming from Logan Airport/East Boston to Boston and points north.

Read more: Sumner Tunnel ‘vitally important infrastructure project’

Those drivers as advised by the Department of Transportation to take the following alternative routes:

To points north, including Maine/Portsmouth, NH/Newburyport, MA: Take MA-1A North to US-1 North
To points south: Take I-90 West/Ted Williams Tunnel to I-93 South
To points west: Take I-90 West/Ted Williams Tunnel

Riders of public transportation can access the Blue Line for free during the closure, as well as the East Boston Ferry. The Commuter Rail coming down from the North Shore will also have a reduced fare.

Roadways leading to Logan Airport and East Boston are open and available for travel.

There are additional weekends when the Sumner Tunnel will be closed after its month-long closure ends on Aug. 5.