Multiple MBTA service changes will go into effect in March for the Red Line and Mattapan trolleys as T workers install and test a new digital signal system.
During the weekends of March 4-5 and March 25-26, shuttle buses will replace regular Red Line service between Harvard and JFK/UMass stations, making stops at all stations except Park Street and Downtown Crossing. Those who normally use the Red Line and those stops will instead connect to the Orange, Blue, and Green Lines at Haymarket and State Station.
Shuttles bound for Ashmont and Braintree legs of the Red Line will stop at Summer and Otis streets, while shuttles headed to Alewife will stop at Federal and Franklin streets, which are a short walk to the Downtown Crossing station.
Evening Mattapan service changes will take place from March 6 to March 9 due to the demolition of a long-closed staircase at Milton Station. Shuttle buses will operate between Mattapan and Ashmont Stations starting at 9 p.m. each night.
From March 20 to March 23, evening weekday Red Line trains between Braintree and North Quincy Stations will be replaced with shuttle buses starting each night at 9 o’clock, allowing MBTA crews to perform necessary tamping work on the tracks.
Signage and MBTA personnel assistance will be present to direct riders to their shuttle buses and “transit ambassadors” will be available to assist riders.
Since the MBTA expects a large influx of customers the weekend of St. Patrick’s Day (March 18-19), there won’t be any service changes during that weekend.


