The rest of July will see service changes on the Red and Orange subway lines, as well as the Kingston, Middleborough, Greenbush, and Worcester commuter rail lines, so that crews can work on track upgrades.

Specifically as to the Red Line, the MBTA is planning on completing critical rail and tie replacement that will alleviate speed restrictions through what are known as “slow zones.”

Buses will substitute for the evening trains between JFK/UMass and North Quincy Stations, beginning around 8:45 p.m. on July 11 to July 12, and on July 20. Similarly, shuttle buses will stand in for weekday trains between JFK/UMass and Braintree stations, starting at 8:45 p.m. on July 21 and during the weekend of July 22-23.

Accessible shuttle bus services will also be offered for the commuter rail lines running adjacent to the Red Line – Kingston, Middleborough, and Greenbush Commuter Rail Lines – that stop at JFK/UMass. Evening weekday trains between South Station and Braintree will be replaced by buses after 7:30 p.m. from June 10 to June 14 and from July 17 to July 21, as well as during the weekend of July 22-23.

Additionally, there will be an express shuttle service operating between South Station and Braintree Station.