List of Massachusetts Bay Transportation Authority yards
The Massachusetts Bay Transportation Authority uses a number of yards and facilities for maintenance and storage of its road and rail fleets.
Active yards
Bus
Many of these facilities are former streetcar carhouses that were gradually converted to trackless trolley and bus use, although some like Southampton are of recent construction. Of the former streetcar carhouses, only Arborway and Watertown were Green Line yards during part of the MBTA era. Everett was an Orange Line yard until 1975.| Name | Location | Routes served | |
| Albany Street Garage | Albany Street, South End, Boston | Local, Mass Pike Express, and crosstown routes | |
| Arborway Yard | Washington Street, Jamaica Plain, Boston | Local bus routes; former terminus of the Green Line E branch | |
| Cabot Garage | Dorchester Avenue, South Boston | Local bus routes | |
| Charlestown Garage | Arlington Avenue, Charlestown, Boston | Local bus routes | |
| Everett Shops | Broadway, Everett | Heavy repair for buses and for subway components; former Orange Line terminus and yard | |
| Fellsway Garage | Salem Street, Medford | Local bus routes | |
| Lynn Garage | Western Avenue, Lynn | Local bus routes; North Shore express routes | |
| North Cambridge Carhouse | Massachusetts Avenue, North Cambridge | Formerly storage and maintenance for Harvard-based trolleybus routes; being converted for battery buses | |
| Quincy Garage | Hancock Street, Quincy | Quincy-based local bus routes | |
| Somerville Garage at Charlestown | Arlington Avenue, Charlestown, Boston | Local bus routes | |
| Southampton Bus Maintenance Facility | Southampton Street, South Bay, Boston | Silver Line dual mode buses; local bus routes | |
| Watertown Yard | Galen Street, Watertown | Midday layover for local bus routes; former terminus of the Green Line A branch and Green Line heavy maintenance facility |
Subway
The subway lines each have one maintenance facility and often several other yards used for overnight and midday storage. Tail tracks for temporary storage of trains are also present at and ; the Green Line has sidings at,, and.| Name | Location | Route | Use | |
| Alewife Yard | north of | Red Line | layover/storage | |
| Bowdoin Yard | west of | Blue Line | layover/storage | |
| Cabot Yard | near | Red Line | maintenance and storage | |
| Caddigan Yard | south of | Red Line | layover/storage | |
| Codman Yard | south of | Red Line | layover/storage | |
| Green Line Extension Vehicle Maintenance Facility | Inner Belt District | Green Line | maintenance and storage | |
| Lake Street Yard | at | Green Line | maintenance and storage | |
| Mattapan Yard | at | Mattapan Line | maintenance and storage | |
| North Station Yard | at | Green Line | layover and storage | |
| Orient Heights Yard | east of | Blue Line | maintenance and storage | |
| Reservoir Yard | between and | Green Line | maintenance and storage | |
| Riverside Yard | at | Green Line | maintenance and storage | |
| Wellington Yard | at | Orange Line | maintenance and storage |
Commuter rail
All MBTA Commuter Rail lines except the Lowell Line have a dedicated layover near the end of the line. Most provide ground power and other facilities, allowing trainsets to be stored overnight; others are simply several yard tracks off the mainline. The MBTA has one heavy maintenance facility on the northside, plus two light maintenance facilities on the southside. Equipment is transferred between the two sides via the Grand Junction Railroad.| Name | Location | Route | Use | |
| Bradford Layover | at | Haverhill Line | layover/storage | |
| Franklin Layover | east of | Franklin/Foxboro Line | layover/storage | |
| Greenbush Layover | at | Greenbush Line | layover/storage | |
| Kingston Layover | at | Kingston Line | layover/storage | |
| MBTA Commuter Rail Maintenance Facility | Inner Belt, Somerville | northside lines | Heavy maintenance for all commuter rail equipment; layover/storage | |
| Middleboro Layover | at | Fall River/New Bedford Line | layover/storage | |
| Needham Layover | south of | Needham Line | layover/storage | |
| Newburyport Layover | south of | Newburyport/Rockport Line | layover/storage | |
| Pawtucket Layover | Pawtucket, Rhode Island | Providence/Stoughton Line | layover/storage | |
| Readville Interim Repair Facility | north of | southside lines | Running maintenance and layover/storage. Expansion into a southside maintenance facility is planned. | |
| Rochester Maintenance Facility | Cape Main Line in Rochester | Overhaul and maintenance | ||
| Rockport Layover | at | Newburyport/Rockport Line | layover/storage | |
| Southampton Street Yard | south of South Station, Boston | southside lines | running maintenance and midday storage – primarily an Amtrak heavy maintenance facility | |
| Stoughton Layover | at | Providence/Stoughton Line | layover | |
| Wamsutta Layover | North of | Fall River/New Bedford Line | layover/storage | |
| Weaver's Cove Layover | North of | Fall River/New Bedford Line | layover/storage | |
| West Cambridge Maintenance Facility | south of | northside lines | Maintenance of way equipment storage | |
| Westminster Layover | west of | Fitchburg Line | layover/storage | |
| Worcester Layover | east of | Framingham/Worcester Line | layover/storage |
Future yards
| Name | Location | Routes served | |
| Beacon Park Yard | At Beacon Park Yard | Midday layover for the Worcester Line. To be constructed by 2032 as part of the realignment of I-90. | |
| Medford garage | 440 Riverside Avenue, Medford | Will replace Lynn Garage and Fellsway Garage. The MBTA purchased the property in August 2025. | |
| Quincy Bus Maintenance Facility | North of | Will replace Quincy Garage. Expected completion in 2027. | |
| Widett Circle | Inside Widett Circle | Layover yard for southside lines. The MBTA Board authorized negotiations for property purchase in December 2022. The MBTA took possession of the property in April 2023. |
Former yards
| Name | Location | Routes | Use | Closed & reason | |
| Attleboro Layover | south of | Providence/Stoughton Line | layover/storage | 2006; replaced by Pawtucket Layover | |
| Bennett Carhouse | south of Harvard Square, Cambridge | Harvard-based streetcar and trackless trolley routes | maintenance and storage | 1970; Eliot Shops closed | |
| Eliot Shops | south of Harvard Square, Cambridge | Red Line | maintenance and storage | 1970; redevelopment | |
| Fitchburg Layover | east of | Fitchburg Line | layover/storage | 2016; replaced by [|Wachusett Layover] | |
| Forest Hills Shops | south of | Orange Line | maintenance and storage | 1987; completion of the southwest Corridor | |
| Haverhill Layover | north of | Haverhill Line | layover/storage | 1987; replaced by Bradford Layover | |
| Ipswich Layover | south of | Newburyport/Rockport Line | layover/storage | 1998; extension to Newburyport | |
| Lechmere Yard | at | Green Line | layover/storage | 2020; relocation of Lechmere station | |
| Sullivan Square Shops | at | Orange Line and streetcars | maintenance and storage | 1975; completion of the Haymarket North Extension | |
| Bartlett Yard | Roxbury near | MBTA bus and streetcars | maintenance and storage | 2005; operations moved to Arborway Yard in 2003 |