List of MBTA bus routes

The Massachusetts Bay Transportation Authority bus division operates 152 bus routes in the Boston, Massachusetts metropolitan area. All routes connect to MBTA subway, MBTA Commuter Rail, and/or other MBTA bus services. Many routes are descendants of the streetcar routes of the Boston Elevated Railway, or of suburban companies including the Eastern Massachusetts Street Railway and Middlesex and Boston Street Railway. 148 routes are directly operated by the MBTA, while private companies operate four routes under contract. Four additional suburban operations are partially funded by the MBTA.

Most buses charge local bus fare ($1.70 one-way as of 2024). The Silver Line waterfront services (SL1, SL2, SL3, and SLW) charge the standard subway fare ($2.40 one-way as of 2024). Express buses have a local portion within a community (which charge the local bus fare if the rider notifies the driver that they will exit within that portion), and an express portion that takes a highway to or from downtown Boston (which charges a higher fare of $4.25 as of 2024).^[1]

A number of routes were temporarily suspended or placed on modified routings during the COVID-19 pandemic; overall service levels were restored to pre-COVID levels in 2021, though some routes were not restored. Since 2018, the MBTA has been planning a major bus network overhaul, with implementation expected to be complete in 2028.^[2]