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Photo 2(4)MassDOT’s Longfellow Bridge Project work continues with an upcoming weekend bridge closure and MBTA Red Line diversion.

MassDOT contractors will close the Longfellow Bridge to all vehicular traffic, except MBTA buses, from 11:00 PM on Friday, December 11 to 5:00 AM on Monday, December 14. The closure is necessary to implement an MBTA Red Line diversion that replaces trains with buses.

Bus service will be in place from the start of service on Saturday, December 12 to the end of service on Sunday, December 13. Buses will replace Red Line trains in both directions for service between Kendall/MIT Station and Park Street Station, with a stop at Charles/MGH Station. The bus route and stops are shown on this map. All shuttle bus stops are accessible for people with disabilities. Red Line trains will resume service on Monday morning, December 14. Please visit the MBTA’s service updates webpage for additional information.

MBTA buses will be the only motor vehicles permitted on the bridge. All other motor vehicles, including passenger vehicles, trucks, and all other buses, will need to use one of two Boston-bound routes to reach Charles River Dam Road (Monsignor O’Brien Highway/Route 28) and Leverett Circle.

Inbound Detour Routes: Height restrictions are in place for Memorial Drive, so all buses and trucks must use the 3rd Street to Binney Street detour described below.

  • From Main Street, turn right onto Memorial Drive westbound, and make a U-turn at Ames Street to access Memorial Drive eastbound. Follow Memorial Drive eastbound to Land Boulevard and turn right onto Charles River Dam Road (Monsignor O’Brien Highway/Route 28) to reach Leverett Circle.
  • From Broadway, turn left onto 3rd Street, turn right on Binney Street, turn left onto Land Boulevard, and then turn right onto Charles River Dam Road (Monsignor O’Brien Highway/Route 28) to reach Leverett Circle.

Emergency response, bicycle, and pedestrian access will be maintained across the bridge during this weekend diversion. Bicyclists must walk their bikes on the sidewalk across the Longfellow Bridge in both directions to ensure the safety of all bridge users. Inbound and outbound bike lanes will be closed during this time to ensure cyclist safety. The Massachusetts Avenue Bridge and Dr. Paul Dudley White Bike Path across the Craigie Dam Bridge can be used as alternate routes to ride bicycles across the Charles River.

The Cambridge-bound detour remains in place using a signed route from Charles Circle following Charles Street to Leverett Circle, Monsignor O’Brien Highway/Charles River Dam Road, and Edwin H. Land Boulevard.

For more information, visit the project website. Check construction progress photos on MassDOT’s Longfellow Bridge Flickr Album. For questions or to report issues related to construction, please call the project hotline at 617-519-9892 or email longfellowbridge@state.ma.us.

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