South Street station (MBTA)

South Street station is a light rail surface stop on the MBTA Green Line B branch, located in the median of Commonwealth Avenue east of South Street in the Brighton neighborhood of Boston, Massachusetts. South Street is the lowest-ridership stop on the B branch, with just 214 daily boardings by a 2011 survey.^[1]

South Street
An inbound train at South Street station in March 2022
General information
Location	Commonwealth Avenue at South Street Brighton, Boston, Massachusetts
Coordinates	42°20′22.31″N 71°9′26.96″W
Platforms	2 side platforms
Tracks	2
Passengers
2011	214 (weekday average boardings)[1]
Services
Preceding station MBTA Following station Boston College Terminus Green Line B branch Chestnut Hill Avenue toward Government Center
Location

Planned closure

Track work in 2018–19, which included replacement of platform edges at several stops, triggered requirements for accessibility modifications at those stops.^[2] Design for South Street and four other B Branch stops was 30% complete by December 2022.^[3] A design shown in March 2024 called for Chestnut Hill Avenue station and South Street station to be consolidated, with a single station located between Chestnut Hill Driveway and Chestnut Hill Avenue.^[4] In May 2024, the Federal Transit Administration awarded the MBTA $67 million to construct accessible platforms at 14 B and C branch stops including the consolidated station.^[5]

Additional stops were added to the B branch project in 2024.^[6][7] As of May 2025^[update], the MBTA expects to issue the $74 million design-build contract in late 2025, with construction lasting from spring 2026 to mid-2027.^[8][9]