MBTA Upgrades Infrastructure Across Five Lines

MBTA to suspend service on five lines in May for infrastructure upgrades and testing

2026-04-18, Moovit News Team

MBTA Plans May Service Suspensions on 5 Lines

Boston-area transit riders face multiple service disruptions in May as the MBTA suspends train service on five lines for infrastructure upgrades, transit officials said. The suspensions affect the Green, Red, Blue, and Mattapan lines plus two commuter rail routes, with closures ranging from two to 12 days throughout the month. Free shuttle buses will replace most suspended services, though riders should expect delays of 10 to 50 additional minutes.

Infrastructure Upgrades Drive Multiple Closures

The service suspensions are part of the MBTA's ongoing infrastructure improvement program, according to the transit agency. The Green Line suspensions between Kenmore and Cleveland Circle from May 6-17 will allow installation of collision-prevention systems, while work between Government Center and Heath Street from May 30 through June 5 supports additional upgrades. Red Line closures on May 2-4, May 14-18, and May 29-31 enable digital signal system testing on both Braintree and Ashmont branches. Transit agencies typically schedule major infrastructure work during periods when alternative transportation can be arranged.
MBTA Green Line train at Kenmore station platform with passengers waiting

Five Lines Face Service Interruptions

The Blue Line won't run between Bowdoin and Airport stations on May 9-10 for system upgrades, officials said. The Mattapan Line will shut down from 6 p.m. on May 14 through May 16 for power work at Codman Yard. Old Colony Commuter Rail Lines—including New Bedford/Fall River, Greenbush, and Kingston routes—won't operate between South Station and Braintree on May 9-10. The Framingham/Worcester Line will be suspended between Worcester and Grafton on May 16-17. Some commuter rail connections will be offered free during certain suspensions, the agency said.

Shuttle Buses to Replace Train Service

Free shuttle buses will replace suspended train service on affected routes, transit officials confirmed. The MBTA didn't specify exact shuttle frequencies or stop locations for all routes. Riders should budget 10 to 50 additional minutes for their trips during the suspensions, according to the agency. Officials recommend planning alternative routes and allowing extra travel time throughout May.
MBTA shuttle bus at transit station with route information displayed

Riders Should Plan for Extended Travel Times

The multiple May suspensions will affect thousands of daily riders across Boston's transit network. Transit officials recommend budgeting extra travel time and considering alternative routes during the service changes. Riders can check Moovit for real-time updates on shuttle bus locations and service adjustments throughout the suspension periods.