The Massachusetts Bay Transportation Authority is the public agency responsible for operating most public transportation services in Greater Boston, Massachusetts. The MBTA transit network includes the MBTA subway with three metro lines, two light rail lines, and a five-line bus rapid transit system ; MBTA bus local and express service; the twelve-line MBTA Commuter Rail system, and several ferry routes. In 2023, the system had a ridership of 239,981,700, or about 796,300 per weekday as of the second quarter of 2024, of which the rapid transit lines averaged 265,900 and the light rail lines 95,900, making it the fourth-busiest rapid transit system and the third-busiest light rail system in the United States. As of the second quarter of 2024, average weekday ridership of the commuter rail system was 107,500, making it the fifth-busiest commuter rail system in the U.S.
The Red Line is a rapid transit line operated by the Massachusetts Bay Transportation Authority (MBTA) as part of the MBTA subway system. The line runs south and east underground from Alewife station in North Cambridge through Somerville and Cambridge, surfacing to cross the Longfellow Bridge then returning to tunnels under Downtown Boston. It continues underground through South Boston, splitting into two branches on the surface at JFK/UMass station. The Ashmont branch runs southwest through Dorchester to Ashmont station, where the connecting light rail Ashmont–Mattapan High Speed Line continues to Mattapan station. The Braintree branch runs southeast through Quincy and Braintree to Braintree station.
The Ashmont–Mattapan High-Speed Line, commonly referred to as the Mattapan Trolley, is a partially grade-separated light rail line which forms part of the MBTA's Red Line rapid transit line. The line, which runs through Boston and Milton, Massachusetts, opened on August 26, 1929, as a conversion of a former commuter rail line. It exclusively uses PCC streetcars built in the 1940s. Passengers must transfer at Ashmont to access the rest of the Red Line, which uses heavy rail metro rolling stock.
JFK/UMass station is a Massachusetts Bay Transportation Authority (MBTA) intermodal transfer station, located adjacent to the Columbia Point area of Dorchester, Boston, Massachusetts. It is served by the rapid transit Red Line; the Greenbush Line, Kingston/Plymouth Line, and Middleborough/Lakeville Line of the MBTA Commuter Rail system, and three MBTA bus routes. The station is named for the John F. Kennedy Presidential Library and Museum and the University of Massachusetts Boston, both located nearby on Columbia Point.
The Massachusetts Bay Transportation Authority (MBTA) operates 152 bus routes in the Greater Boston area. The MBTA has a policy objective to provide transit service within walking distance for all residents living in areas with population densities greater than 5,000 inhabitants per square mile (1,900/km2) within the MBTA's service district. Much of this service is provided by bus. In 2023, the system had a ridership of 91,459,700, or about 318,100 per weekday as of the second quarter of 2024.
Key bus routes of the Massachusetts Bay Transportation Authority (MBTA) system are 15 routes that have high ridership and higher frequency standards than other bus lines, according to the 2004 MBTA Service Policy. Together, they account for roughly 40% of the MBTA's total bus ridership. These key bus routes ensure basic geographic coverage with frequent service in the densest areas of Boston, and connect to other MBTA services to give access to other areas throughout the region.
As with many large cities, a large number of Boston-area streetcar lines once existed, and many continued operating into the 1950s. However, only a few now remain, namely the four branches of the Green Line and the Ashmont–Mattapan High-Speed Line, with only one running regular service on an undivided street.
Fields Corner station is a rapid transit station on the Ashmont branch of the Massachusetts Bay Transportation Authority (MBTA) Red Line, located in the Fields Corner district of Dorchester, Boston, Massachusetts. It is a major transfer point for MBTA bus service, serving routes 15, 17, 18, 19, 201, 202, and 210. The station opened in 1927 and was completely rebuilt from 2004 to 2008, making it fully accessible.
Ashmont station is a Massachusetts Bay Transportation Authority (MBTA) intermodal transit station located at Peabody Square in the Dorchester neighborhood of Boston, Massachusetts. It is the southern terminus of the Ashmont branch of the rapid transit Red Line, the northern terminus of the connecting light rail Ashmont–Mattapan High-Speed Line, and a major terminal for MBTA bus service. Ashmont has two side platforms serving the below-grade Red Line and a single side platform on an elevated balloon loop for the Mattapan Line. The station is fully accessible for all modes.
The Massachusetts Bay Transportation Authority (MBTA) maintains a large public transit system in the Boston, Massachusetts area, and uses various methods to name and number their services for the convenience of users.
Quincy Adams station is a rapid transit station in Quincy, Massachusetts. It serves the Braintree Branch of the MBTA's Red Line. Located in southern Quincy on Burgin Parkway near the Braintree Split, the station features a large park and ride garage, with space for 2,538 automobiles, built over the station tracks and platforms. It is fully accessible.
Savin Hill station is a rapid transit station in Boston, Massachusetts. It serves the Ashmont branch of the MBTA's Red Line. It is located at 121 Savin Hill Avenue adjacent to Sydney Street in the Savin Hill area of the Dorchester neighborhood. Opened in 1845 as a commuter rail station, Savin Hill was converted to rapid transit in 1927 and rebuilt in 2004–05 for accessibility. Averaging 2,199 daily boardings by a FY 2019 count, Savin Hill is the least-used station on the Red Line.
The Providence/Stoughton Line is an MBTA Commuter Rail service in Massachusetts and Rhode Island, primarily serving the southwestern suburbs of Boston. Most service runs entirely on the Northeast Corridor between South Station in Boston and Providence station or Wickford Junction station in Rhode Island, while the Stoughton Branch splits at Canton Junction and terminates at Stoughton. It is the longest MBTA Commuter Rail line, and the only one that operates outside Massachusetts. The line is the busiest on the MBTA Commuter Rail system, with 17,648 daily boardings in an October 2022 count.
Shawmut station is a subway station in Boston, Massachusetts. It serves the Ashmont branch of the MBTA's Red Line. It is located on Dayton Street in the Dorchester neighborhood. The station, the only underground station on the Red Line south of Andrew station, sits in a shallow cut-and-cover subway tunnel that runs from Park Street south to Peabody Square where it surfaces at Ashmont station. Shawmut opened along with Ashmont on September 1, 1928, as part of a southward extension of the Cambridge–Dorchester line.
Brockton station is an MBTA Commuter Rail station in Brockton, Massachusetts. It serves the MBTA Middleborough/Lakeville Line and is a stop on the seasonal CapeFLYER service. The station has a single accessible full-length high-level platform that serves the line's two tracks. It is located adjacent to the BAT Centre, the primary hub for Brockton Area Transit Authority local bus service.
Middleborough/Lakeville station is an MBTA Commuter Rail station in Lakeville, Massachusetts, just south of the Middleborough border. It is the southern terminus of the Middleborough/Lakeville Line; it is also an intermediate stop for seasonal CapeFlyer service to Cape Cod. Middleborough/Lakeville has a single full-length high-level side platform serving the line's single track.
The Lowell Regional Transit Authority (LRTA) is a public, non-profit organization in Massachusetts, charged with providing public transportation to the Greater Lowell area. This primarily includes the city of Lowell and the towns of Andover, Billerica, Burlington, Dracut, Chelmsford, Littleton, Tewksbury, Tyngsborough, Westford and Wilmington. The LRTA provides fixed route bus services and paratransit services within this area, although some fixed lines do extend beyond these towns.
Merrimack Valley Transit, formerly known as Merrimack Valley Regional Transit Authority is a public, non-profit organization in Massachusetts, United States, charged with providing public transportation to an area consisting of the cities and towns of Amesbury, Andover, Boxford, Georgetown, Groveland, Haverhill, Lawrence, Merrimac, Methuen, Newbury, Newburyport, North Andover, Rowley, Salisbury and West Newbury, as well as a seasonal service to the popular nearby summer destination of Hampton Beach, New Hampshire.
Middleborough station is an under-construction MBTA Commuter Rail station in Middleborough, Massachusetts. It is expected to open in May 2025 as part of the South Coast Rail project, replacing Middleborough/Lakeville station for regular service. The station will have a single side platform located inside the wye between the Middleborough Main Line and the Middleboro Secondary.
The Old Colony Street Railway Company was a horse-drawn and electric streetcar railroad operated on the streets of Boston, Massachusetts and communities south of the city. Founded in 1881 as the Brockton Street Railway Company, via lease and merger it became a primary mass transit provider for southeastern Massachusetts and Rhode Island. Its immediate successor was the Bay State Street Railway, and its modern successor is the state-run Massachusetts Bay Transportation Authority (MBTA).
