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Massachusetts Bay Transportation Authority (abbreviated to MBTA and referred to as the T) operates transit service in Greater Boston, Massachusetts. Both local and express bus service is operated, along with subway, light rail and ferry service.

In 2016, the bus system averaged 497,200 passengers per weekday. The MBTA bus system is the nation's sixth largest by ridership and comprises over 150 routes across the Greater Boston area. The area served by the MBTA's bus operations is somewhat larger than its subway and light rail service area, but is significantly smaller than that served by the MBTA's commuter rail operation. Along with the MBTA Subway lines, there is limited overnight service on the SL1, SL3 and the 1, 23, 28 and 39 routes. Up until 1964, the system was named the Metropolitan Transit Authority (MTA).

Downtown Division[]

A series of local and express routes connecting to downtown and the surrounding areas operate out of the many downtown garages. Many of the routes act as major routes connecting busy markets and corridors, as well as act as a one-seat ride to the suborbs.

Albany Street Garage[]

Albany Street Depot provides the buses for the routes that operate directly west of Boston. The depot is unable to service and store the MBTA's new New Flyer XDE40 buses because of the roof height of the garage so older buses must be assigned to the garage. Albany Street is closed on the weekends, though it is not unheard of for their buses to sometimes enter service on a weekend because of a subway shuttle. Because of the weekend closure issue, Cabot takes over their routes for the weekend.

During normal operations, Albany Street Garage rotates their fleet with Waterfront Yard, as there is a satellite depot located along the property. During weekends, the Watertown Yard routes are replaced by the Charlestown Garage fleet.

Full time routes: 4, 55, 57, 59, 60, 65, 170, 193, 501, 502, 503, 504, 505, 553, 554, 556, 558, CT2, CT3

Part time routes: 66

Fleet:

  • 2006-07 New Flyer D40LF: 0625, 0630, 0643, 0647, 0650, 0655-0656, 0658-0659, 0662, 0664-0665, 0667-0671, 0673, 0675-0676, 0679-0680, 0682-0683, 0686-0688, 0692-0731, 0733-0749, 0753 (89)
  • 2008-09 New Flyer D40LF: 0770, 0777-0782, 0837-0849, 0851, 0853, 0863, 0868-0872, 0874-0901, 0910 (59)

Cabot Garage[]

Cabot Garage provides the buses for the routes that operate in Downtown and Southern Boston. Cabot is one of the few depots that operates the MBTA's CNG buses.

Full time routes: 1, 7, 8, 9, 10, 11, 15, 16, 17, 18, 19, 22, 23, 43, 44, 45, 47, 66, 191, CT1

Part time routes: 57, 59, 60, 65, 193, 504, 553

Fleet:

  • 2016-17 New Flyer XN40: 1720-1774 (55)
  • 2016-17 New Flyer XDE40: 1775-1924 (150)

Southampton Garage[]

Southampton Street Garage houses the entirety of Boston's articulated bus fleet, and thus all of the dual-mode (Diesel-trolleybus) and fully electric (non-trolleybus) buses. Southampton Street used to house CNG buses, but those were replaced by hybrid-electric vehicles instead. This garage is currently being retrofitted to house fully electric buses and is the first garage to house said buses. Southampton Street also houses the entire of MBTA's BRT system (Gold and Silver Line)

Full time routes: 28, 39, SL1, SL2, SL3, GL1, GL2, GL3

Part time routes: 16

Fleet:

  • 2004-05 Neoplan USA AN460LF DMA (BRT; Silver): 1101-1132 (32)
  • 2004-05 Neoplan USA AN440 (BRT; Gold): 0401, 0408, 0418, 0420-0422, 0424, 0427, 0432, 0439, 0441, 0454-0455, 0463-0464, 0493, 0512, 0515, 0519, 0522-0523, 0525, 0530-0531, 0533, 0536, 0550-0551, 0553, 0558, 0566-0567, 0590 (34)
  • 2006-07 New Flyer D40LF (BRT; Gold): 0609, 0623, 0627, 0632, 0639, 0644, 0666, 0677, 0685 (9)
  • 2010 New Flyer DE60LFR: 1200-1206, 1208-1221, 1224 (22)
  • 2010 New Flyer DE60LFR (BRT; Silver): 1222-1223 (2)
  • 2016-17 New Flyer XDE60: 1250-1272 (23)
  • 2016-17 New Flyer XDE60 (BRT; Silver): 1273-1294 (22)
  • 2019 New Flyer XE60 (BRT; Silver): 1295-1299 (5)
  • 2021-22 New Flyer XE60 (BRT; Gold): 1300-1329 (30)

North Division[]

Charlestown Garage[]

Charlestown Garage is the MBTA's largest garage, housing more buses and operating more routes than any other garage, partially thanks to the extra work it picks up from the garages that close over the weekend. Charlestown is unique in that though it is one facility, it is split into two "districts", the first being Charlestown and the other Bennett or Somerville. Buses are not assigned to one division in particular. Charlestown (District) provides the buses for some of the routes that operate Cambridge and the northern suburbs of Boston. Bennett/Somerville provides the buses for the routes in Boston's central-Northwestern suburbs (Not directly NW).

Full time routes (Charlestown): 89, 91, 92, 93, 101, 104, 109, 110, 111, 112, 194, 325, 326

Full time routes (Somerville): 61, 62, 64, 67, 68, 69, 70, 72, 74, 75, 76, 77, 78, 79, 80, 83, 84, 85, 86, 87, 88, 350, 351

Part time routes (Charleston): 90, 94, 95, 96, 97, 99, 100, 105, 106, 108, 132, 134, 136, 137, 411, 430

Part time routes (Somerville): 71, 73

Fleet:

  • 2019-2020 New Flyer XDE40: 1925-2043 (119; Somerville)
  • 2019-2020 XDE40: 2044-2118 (75; Charlestown)
  • 2021 New Flyer XDE40: 3129-3159 (31; Charlestown)

Fellsway Garage[]

Fellsway Garage provides the buses for the routes that operate directly northwest of Boston. The depot is closed on the weekends, though it is not unheard of for their buses to sometimes enter service on a weekend because of a subway shuttle. Because of the weekend closure issue, Charlestown (District) takes over their routes for the weekend.

Full time routes: 90, 94, 95, 96, 97, 99, 100, 105, 106, 108, 131, 132, 134, 136, 137, 354, 411, 430

Fleet:

  • 2004-05 Neoplan USA AN440: 0405, 0409, 0423, 0425, 0428-0429, 0431, 0434-0435, 0440, 0442-0443, 0478, 0508, 0510, 0513-0514, 0516, 0528, 0532, 0535, 0539-0540, 0569, 0587 (25)
  • 2006-07 New Flyer D40LF: 0600-0608, 0610-0619, 0622, 0624, 0626, 0628-0629, 0631, 0633-0636, 0638, 0640-0642, 0645-0646, 0648-0649, 0651-0654, 0657, 0660-0661, 0663, 0672, 0674, 0678, 0681, 0684, 0689-0691 (53)

Lynn Garage[]

Lynn Garage provides the buses for the routes that operate in the immediate far northeastern suburbs of Boston.

Full time routes: 114, 116, 117, 119, 120, 121, 424, 426, 428, 429, 434, 435, 436, 439, 441, 442, 450, 451, 455, 456, 465

Fleet:

  • 2008 New Flyer D40LF: 0850, 0852, 0854-0862, 0864-0867, 0873 (16)
  • 2014 New Flyer XDE40: 1400-1459 (60)
  • 2021 New Flyer XDE40: 3100-3128 (29)

North Cambridge Carhouse[]

North Cambridge Carhouse houses the entirety of Boston's (non-dual mode) trolleybus fleet. It provides the buses for three routes that operate in Cambridge, MA.

Full time routes: 71, 73, 77A

Fleet:

  • 2021-22 New Flyer XT40: 4200-4229 (30)

South Division[]

Arborway Garage[]

Arborway Garage provides the buses for the routes that operate in the immediate southern and far southwestern suburbs of Boston. Arborway is the MBTA's only 100% CNG depot.

Full time routes: 14, 21, 24, 26, 27, 29, 30, 31, 32, 33, 34, 34E, 36, 37, 38, 40, 41, 42, 50, 51, 52, 192, 195

Part time routes: 39

Fleet:

  • 2016 New Flyer XN40: 1600-1719 (120)

Quincy Garage[]

Quincy Garage provides the buses for the routes that operate in the far southeastern suburbs of Boston.

Full time routes: 201, 202, 210, 211, 212, 214, 215, 216, 217, 220, 221, 222, 225, 226, 230, 236, 238, 240, 245

Fleet:

  • 2008 New Flyer D40LF: 0756-0769, 0778-0781, 0783-0836, 0902-0909 (80)

Private Lines[]

Routes 710-716 are operated by Private carriers. Routes 710 was operated by Joseph's Transportation using Grande West Vicinity buses from their facility in Medford, MA. Routes 712 and 713 are operated by Paul Revere Transportation using New Flyer XDE40s from their Eastern Avenue garage in Chelsea, MA, which replaced the 2006 Eldorado National E-Z Rider II MAX 35' buses (1700-1705; later displaced to A&A Metro as 3011-3016). Routes 714 is operated by Seaside transportation (formerly Nantasket Transportation) and 716 is operated by A&A Metro from a lot near Bridgewater, MA. The Grande West Vicinity buses were transferred to Seaside Transportation by March 2021, and a new delivery of XDE35 buses arrived for A&A Metro by the same time. All private lines with the exception of 712/713 formerly used a fleet of 29 ft 2002 Gillig Low Floor buses (1991-2004). Previously, all buses operated with 1985 GMC RTS buses (9420-9439).

Fleet:

  • 2016 New Flyer XDE40: 3000-3005 (6; 712/713)
  • 2018 Grande West Vicinity Classic: 3006-3010 (5; 714)
  • 2021 New Flyer XDE35: 3017-3020 (4; 716)
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