Unlike the other three Green Line branches, the D branch did not originate as a streetcar line running on city streets. The Boston and Albany RailroadHighland branch, built in segments from 1848 to 1886, operated as a commuter rail line until its 1958 closure. It was converted to a streetcar rapid transit line by the Metropolitan Transportation Authority and reopened on July 4, 1959. Ownership passed to the MBTA in 1964; Tremont Street subway service was designated as the Green Line in 1965, with the Riverside Line becoming the D branch in 1967.
The line was substantially rebuilt in the mid-1970s, in 2007, and in 2018–2020. The downtown terminal was shifted between Park Street, Government Center, North Station, and Lechmere a number of times; it was extended to Union Square in September 2022 as part of the Green Line Extension project. Nine of the line's thirteen surface stations have been rebuilt for accessibility; the remaining four are scheduled for rebuilding beginning in 2024.
Conversion of the Highland branch to a third-rail rapid transit line was proposed in 1913. That proposal called for trains to reach downtown Boston using the then-under-construction Boylston Street subway, which was built for streetcars but sized for rapid transit conversion, with a connection near Governor Square.[7]:17 In May 1924, the state legislature directed the Metropolitan District Commission to plan an expanded rapid transit system in Boston.[8] The plan, released in 1926, called for the existing streetcar subway to be converted into two rapid transit lines. A number of potential future extensions were listed; among them was conversion of most of the Highland branch to rapid transit, linking with a Huntington Avenue subway at Brookline Village.[9]
In 1943, the state legislature appointed a commission headed by Arthur W. Coolidge to plan for the future of transit in the Boston region. In 1945, a preliminary report from the Coolidge Commission recommended nine suburban rapid transit extensions – most similar to the 1926 plan – along existing railroad lines.[10][11] The Highland branch was to be converted to a rapid transit line, using low-floor trains that could operate in the existing streetcar subway. A branch would use the former Charles River Branch Railroad route to Needham Junction. Separately, two tracks of the B&A mainline would be converted to rapid transit, also terminating at Riverside.[12][10] The final report in 1947 did not recommend any changes to the Highland branch route, though it recommended extending the Needham Junction spur to Bird's Hill.[13][12]:18 Cost was estimated at $1.544 million in 1941 dollars (equivalent to $25 million in 2023) for the Riverside route, plus $424,000 (equivalent to $7 million in 2023) for the Needham spur.[12]:13
On June 20, 1957, the state legislature authorized the Metropolitan Transit Authority (MTA) to acquire the Highland branch and convert it to rapid transit at a cost not to exceed $9.2 million (equivalent to $76 million in 2023).[14] The project was approved by the MTA Advisory Board on October 1, 1957, and the state Department of Public Utilities on December 6. The Interstate Commerce Commission gave a certificate of abandonment early in 1958.[15] The B&A ran its last passenger trains on the branch on May 31, 1958.[16][7]:4 On June 9, the $7.0 million main construction contract (equivalent to $57 million in 2023) was awarded to the Perini Corporation.[17] The MTA acquired the line from the B&A at a cost of $600,000 (equivalent to $5 million in 2023) on June 24.[7]:4[16]
A train leaving Riverside in 1965
Work began with a groundbreaking ceremony on July 10, 1958.[7]:4 The work was done at relatively low cost by reusing the railroad infrastructure, including bridges and tracks; the only new right-of-way was a 1,100-foot (340m) tunnel connecting Fenway station with the existing Beacon Street Line subway.[7]:14 Using trains of streetcars represented a substantial savings versus using third-rail rapid transit trains, which would have required significant work in the existing subway.[7]:2 Ten of the twelve existing station sites on the line were reused for new stations; two others, Riverside and Woodland, were relocated. An additional station, Fenway Park, was added at Park Drive. Small wooden shelters and new platforms were built at the stations; a larger brick waiting room was built at Riverside. All but three of the old station buildings were demolished for parking lots. These lots included a 1,960-space lot at Riverside, a 350-space lot at Woodland, and smaller lots at six other stations.[7]:8
A storage yard was built at Riverside, and a connection with the existing Reservoir Carhouse of the Beacon Street Line was made at Reservoir station. An overhead loop for short turns was also built at Reservoir.[7]:4 The line was electrified with 600 V DC overhead lines; a new substation was built at Cook Street to power the Riverside–Reservoir section, while the inner section was fed by existing substations.[7]:11–12 Three-aspect color light block signals, similar to those already used in the subway, were added. They were spaced to allow four-minute headways west of Reservoir and two-minute headways to the east.[7]:13–14 Train testing began on June 11, 1959.[15]
Streetcar operation began on the Highland branch on July 4, 1959.[7]:3 Trains operated with one to three PCC streetcars.[7]:15 By the end of 1959, the line carried 26,000 daily riders, versus 3,140 before conversion.[18] Initial plans called for every other train to short turn at Reservoir. However, the outer section of the line had higher ridership than expected, and soon all trains operated to Riverside.[7]:11 The yard at Riverside was expanded between June 1960 and January 12, 1961, with additional storage tracks and maintenance facilities to meet the additional demand.[15] The signals were also adjusted to allow for two-minute headways on the whole line.[7]:14,15 Initial fares were 20 cents for all rides –substantially lower than the previous B&A fares. This was adjusted in 1961 as part of a systemwide fare change, with 40-cent fares west of Reservoir and 30-cent fares at Reservoir through Longwood.[7]:7 Riverside service initially ran to Park Street; it was extended to Lechmere (except on Sundays) on November 20, 1961.[2]
The MBTA takeover
The Massachusetts Bay Transportation Authority (MBTA) replaced the MTA in August 1964. The streetcar routes entering the Central Subway were designed as the Green Line on August 26, 1965. Sunday service was extended to Lechmere on September 10, 1966. In 1967, the five remaining Green Line branches were given letter designations; the Riverside Line became the D branch.[2]
A train of Boeing LRVs at Eliot station in 1984
The tracks were rebuilt in the mid-1970s to prepare for the new Boeing light rail vehicles. From September 8 to December 28, 1973, buses replaced streetcars between Newton Highlands and Riverside. A temporary loop was built at Cook Junction to turn the single-ended PCC streetcars.[19][2] (The loop rails were later reused by the Seashore Trolley Museum.)[19][20][21] From June 8 to September 11, 1974, buses ran between Kenmore and Reservoir while the inner portion of the line was reconstructed. A temporary loop was used near Reservoir station, allowing D branch trains to use the C branch between Reservoir and Kenmore.[19][2][22] (On March 5, 1974, the downtown terminal had been cut back from Lechmere to North Station to accommodate the longer running times associated with this rerouting.)[2] From September 28, 1974 to September 20, 1975, single-tracking took place between Cook Junction and Reservoir.[19][2] Station platforms were also rebuilt during these shutdowns.[19] A new maintenance facility at Riverside was opened on July 12, 1976, to serve the new LRV fleet.[15]
The MBTA's first LRVs operated on the D branch on December 30, 1976. The downtown terminal was changed several times in 1976–77; PCCs and LRVs sometimes used different terminals (as LRVs could use stub-end tracks, while PCCs required a loop). On December 15, 1977, all D branch trains running with LRVs began using the newly rebuilt Canal Street surface terminal at North Station; the small number of PCCs continued to loop at Government Center.[2] Regular use of PCC cars on the D branch ended March 23, 1978, though later LRV shortages prompted the occasional return of PCC streetcars.[2] The downtown terminal was again changed several times from 1980 to 1984; after January 20, 1984, D branch trains terminated at Government Center at rush hours and Lechmere at other times. Rush hour service was cut back to Government Center on June 20, 1987.[2]
Riverside station on the D branch is located about 1⁄3 mile (1⁄2km) southeast of the station on the mainline, which saw commuter rail service until 1977. The tracks between the two stations were largely disused by the 1960s, though they were used for LRV deliveries in the 1970s. On October 20, 1996, flooding from the Muddy River inundated the Green Line subway. D branch trains only ran between Riverside and Brookline Village until October 27, when they were extended to Park Street.[2] Special commuter rail shuttle trains also ran between South Station and a temporary platform near the Riverside light rail station from October 23–25 to supplement Green Line service.[23] Weekend D branch service was extended to Lechmere on March 28, 1997; weekday service followed on June 21. It was cut back to Government Center on June 19, 2004, to accommodate the demolition of the Causeway Street elevated and the opening of the new underground North Station. Green Line service to Lechmere resumed on November 12, 2005, though the D branch continued to terminate at Government Center.[2]
21st century
A three-car train departing Reservoir station in 2011
The tracks were rehabilitated again in 2007 because new Type 8 LRVs did not operate reliably at the desired 40to 50mph (65–80km/h) speeds. Unlike previous rolling stock, the D branch was the last to get the new LRvs due to the need to upgrade the tracks.[2] Shuttle buses replaced rail service between Riverside and Reservoir from June 23 to August 3, 2007, and between Reservoir and Fenway from August 4–31.[24][2] On May 28, 2008, two trains collided between Woodland and Waban stations, killing the operator of the rear train.[25][26] The National Transportation Safety Board investigation concluded that the operator likely had an episode of micro-sleep caused by sleep apnea.[27]
On October 25, 2010, the MBTA began operating some three-car trains on the D branch at peak hours. This was expanded on March 21, 2011, but was discontinued on March 21, 2016, in favor of operating two-car trains on more consistent headways.[2] On March 22, 2014, Government Center closed for reconstruction. D branch trains terminated at Park Street during peak hours and North Station at other times. All D branch trains resumed terminating at Government Center when it reopened on March 22, 2016.[2]
Work from 2018 to 2021 included a full modern signal system for the line between Beaconsfield and Riverside plus partial track replacements. Between October and December 2018, shuttle bus service replaced service between Brookline Hills and Reservoir every weekday evening and every weekend until after December 16. During 2019 and 2020, shuttle buses replaced service on 15 weekends and on all weeknights.[28] The Fenway Portal project was completed on November 23, 2020.[29] The track and signal work was completed in December 2021.[30] Three nine-day closures of the whole D branch took place between September 24 and October 28, 2022, to allow for work including installation of a train protection system and track replacement between Eliot and Riverside.[31][32]
Accessibility
Raised platforms at Newton Centre station, which were added around 2003
Riverside station was rebuilt in the late 1990s, with raised platforms to provide accessible boarding on the Type 8 light rail vehicles then being built. Reservoir and Brookline Village were temporarily fitted with portable lifts for accessibility, with Brookline Hills added by 2003.[33][34][35] Newton Centre, Reservoir, and Fenway were retrofitted with raised platforms around 2003.[34] Woodland was rebuilt for accessibility in 2006, followed by Longwood and Brookline Village in 2009.[36][37] Reconstruction of Brookline Hills station took place from September 2019 to January 2022 as part of the construction of an expansion of Brookline High School.[38]
Temporary work to make Newton Highlands accessible was done in 2019–2020. Design work for a full reconstruction was completed in 2023.[39]As of June 2024[update], the construction timeline has not been determined.[40] Design work for the remaining four non-accessible stops (Beaconsfield, Chestnut Hill, Eliot, and Waban) was completed in late 2022.[39][41]As of October 2024[update], the renovations at the four stations are planned to be done in two phases. The first phase – sections of accessible platform similar to those previously installed at Newton Highlands, and some entrances made accessible – are to be complete by the end of the year. Full renovations are expected to take place in 2027 to serve new Type 10 vehicles.[42]
Green Line Extension
Original plans for the Green Line Extension called for the D branch to be extended through the rebuilt Lechmere station to Medford/Tufts station, with several intermediate stops.[43][44] However, in April 2021, the MBTA indicated that the D branch would instead be extended to Union Square, with the E branch running to Medford/Tufts.[45] The D and E branches were chosen for the extension because they serve the Longwood Medical Area; the D branch was assigned to the shorter Union Square Branch because its western leg is longer than that of the E branch.[46]
The D branch was temporarily extended to North Station on October 24, 2021, as part of changes in preparation for the opening of the extension.[47][46] The Union Square Branch opened on March 21, 2022.[48] It was initially served by the E branch rather than the D branch. The western portion of the E branch was closed from August 6–20, 2022, for track work; during that time, Union Square was served by C branch trains plus Reservoir short turns from the D branch.[2] All service was cut back to Government Center from August 22 to September 18, 2022, to allow for final integration of the Medford Branch and other work.[49] Upon reopening, most D branch service (plus E branch service) began running to Union Square, though some peak hour trains short turned at Government Center. E branch trains began non-revenue test service to Medford/Tufts on November 1, 2022, leaving only the D branch serving Union Square.[2]
The Union Square Branch was closed from September 18 to October 12, 2023, during repairs to Squires Bridge, which carries the McGrath Highway over the tracks.[50][51] The closure was originally planned for July 18 to August 28, but was delayed and shortened due to public criticism.[52][53][54]
The Green Line is a semi-metro system run by the Massachusetts Bay Transportation Authority (MBTA) in the Boston, Massachusetts, metropolitan area. It is the oldest MBTA subway line, and with tunnel sections dating from 1897, the oldest subway in North America. It runs underground through downtown Boston, and on the surface into inner suburbs via six branches on radial boulevards and grade-separated alignments. With an average daily weekday ridership of 101,000 in 2023, it is among the most heavily used light rail systems in the country. The line was assigned the green color in 1967 during a systemwide rebranding because several branches pass through sections of the Emerald Necklace of Boston.
Kenmore station is an underground light rail station on the MBTA Green Line, located under Kenmore Square in the Fenway/Kenmore neighborhood of Boston, Massachusetts, United States. It is served by the B, C, and D branches of the Green Line. The station has two island platforms, one for each direction. Kenmore is the primary station for Fenway Park, which is 1,000 feet (300 m) to the south. The station opened on October 23, 1932 as a one-station extension of the Boylston Street subway to relieve congestion in the square. It was renovated for accessibility in 2005–2010.
Science Park station is an elevated light rail station on the Massachusetts Bay Transportation Authority (MBTA) Green Line in Boston, Massachusetts, United States. The station is located at the Boston end of the Charles River Dam Bridge at Leverett Circle. It is at the southeast end of the Lechmere Viaduct, which carries the Green Line over the Charles River. The station is named for the nearby Boston Museum of Science. With 873 daily boardings by a FY 2019 count, Science Park is the least-used fare-controlled station on the Green Line, and the second-lowest on the MBTA subway system after Suffolk Downs.
Boston College station is a light rail station on the MBTA Green Line B branch. It is located at St. Ignatius Square on the Boston College campus near the intersection of Commonwealth Avenue and Lake Street, on the border between the Brighton neighborhood of Boston and the Chestnut Hill neighborhood of Newton, Massachusetts. Originally opened in 1896, it has been the terminus of the Commonwealth Avenue line since 1900. The current station is planned to be replaced by a new station located in the median of Commonwealth Avenue just east of Lake Street.
Lechmere station is a Massachusetts Bay Transportation Authority (MBTA) Green Line light rail station in Lechmere Square in East Cambridge, Massachusetts. It is located on the east side of Monsignor O'Brien Highway near First Street, adjacent to the NorthPoint development. The accessible elevated station has a single island platform, with headhouses at both ends. It opened on March 21, 2022, as part of the Green Line Extension (GLX). Lechmere station is served by Green Line D branch and E branch service.
Riverside station is a Massachusetts Bay Transportation Authority (MBTA) Green Line light rail station located in the Auburndale village of Newton, Massachusetts. It is the western terminal of the Green Line D branch service. The station is located near the interchange of Interstate 95 and the Massachusetts Turnpike (I-90) and serves as a regional park and ride station. West of the station is Riverside Yard, the main maintenance facility and largest storage yard for the Green Line. The station is fully accessible.
Reservoir station is a light rail station on the MBTA Green Line D branch, located in Brookline, Massachusetts, adjacent to the Cleveland Circle area of Brighton. The station is adjacent to Reservoir Yard and Carhouse, with the Cleveland Circle terminus of the C branch just a block away. With a daily ridership of 3,395, Reservoir is the second-busiest surface stop on the D branch.
The E branch is a light rail line in Boston, Cambridge, Medford, and Somerville, Massachusetts, operating as part of the Massachusetts Bay Transportation Authority (MBTA) Green Line. The line runs in mixed traffic on South Huntington Avenue and Huntington Avenue between Heath Street and Brigham Circle, in the median of Huntington Avenue to Northeastern University, then into the Huntington Avenue subway. The line merges into the Boylston Street subway just west of Copley, running to North Station via the Tremont Street subway. It then follows the Lechmere Viaduct to Lechmere, then the Medford Branch to Medford/Tufts. As of February 2023, service operates on eight-minute headways at weekday peak hours and eight to nine-minute headways at other times, using 13 to 17 trains.
The C branch, also called the Beacon Street Line or Cleveland Circle Line, is one of four branches of the Massachusetts Bay Transportation Authority's Green Line light rail system in the Boston, Massachusetts metropolitan area. The line begins at Cleveland Circle in the Brighton neighborhood of Boston and runs on the surface through Brookline along the median of Beacon Street. Reentering Boston, the line goes underground through the Saint Mary's Street incline and joins the B and D branches at Kenmore. Trains run through the Boylston Street subway to Copley where the E branch joins, then continue through the Tremont Street subway to downtown Boston. The C branch has terminated at Government Center station since October 2021.
The B branch, also called the Commonwealth Avenue branch or Boston College branch, is a branch of the MBTA Green Line light rail system which operates on Commonwealth Avenue west of downtown Boston, Massachusetts. One of four branches of the Green Line, the B branch runs from Boston College station down the median of Commonwealth Avenue to Blandford Street. There, it enters Blandford Street portal into Kenmore station, where it merges with the C and D branches. The combined services run into the Boylston Street subway and Tremont Street subway to downtown Boston. B branch service has terminated at Government Center since October 2021. Unlike the other branches, B branch service runs solely through the city limits of Boston. The Green Line Rivalry between Boston College and Boston University is named in reference to the B branch, which runs to both universities.
Fenway station is a light rail stop on the MBTA Green Line D branch, located under Park Drive near the Riverway in the Fenway–Kenmore neighborhood of Boston, Massachusetts. It opened as Fenway Park along with the rest of the D branch on July 4, 1959, when streetcars replaced Highland branch commuter rail service. The station is fully accessible from Park Drive via the Landmark Center parking lot, as well as from Miner Street. Now named after the Fenway neighborhood rather than Fenway Park, it is slightly further from the stadium than Kenmore, though still heavily used during events.
Back of the Hill station is a surface stop on the light rail MBTA Green Line E branch, located in the Mission Hill neighborhood of Boston, Massachusetts. It is named after, and primarily serves, the adjacent Back of the Hill apartment complex, a Section 8 development for elderly and disabled residents. Back of the Hill is located on the street running section of the E branch on South Huntington Avenue. The station has no platforms; passengers wait in bus shelters on the sidewalks and cross a traffic lane to reach Green Line trains.
Brookline Village station is a light rail station on the MBTA Green Line D branch, located in the Brookline Village neighborhood of Brookline, Massachusetts, United States. It was originally a commuter rail station on the Boston and Albany Railroad's Highland branch; it closed with the rest of the line in 1958 and reopened on July 4, 1959 as a light rail station. With 3,230 daily boardings, it is the third-busiest surface station on the D branch and the sixth-busiest surface station overall. Brookline Village station has raised platforms for accessibility with low-floor light rail vehicles.
The Lechmere Viaduct is a concrete arch bridge connecting the West End neighborhood of Boston to East Cambridge, Massachusetts. Opened in 1912, the viaduct carries the MBTA's Green Line over the Charles River. It is adjacent to the Charles River Dam Bridge, but structurally separate.
Brookline Hills station is a light rail station on the Massachusetts Bay Transportation Authority (MBTA) Green Line D branch in the Brookline Hills neighborhood of Brookline, Massachusetts. The station has two side platforms serving the line's two tracks. It was closed from April 2021 to January 2022 as part of adjacent construction on a Brookline High School building, which included renovations to make the station accessible.
Babcock Street station is a light rail stop on the Massachusetts Bay Transportation Authority (MBTA) Green Line B branch, located in the median of Commonwealth Avenue in the west part of the Boston University campus. The accessible station has two side platforms serving the line's two tracks, with access at Babcock Street and Pleasant Street.
The Green Line Extension (GLX) was a construction project to extend the Massachusetts Bay Transportation Authority (MBTA) Green Line light rail system northwest into Somerville and Medford, two inner suburbs of Boston, Massachusetts. The project opened in two phases in 2022 at a total cost of $2.28 billion. Total ridership on the 4.3-mile (6.9 km) extension is estimated to reach 45,000 one-way trips per day in 2030.
Magoun Square station is a light rail station on the Massachusetts Bay Transportation Authority (MBTA) Green Line located at Lowell Street south of Magoun Square in Somerville, Massachusetts. The accessible station has a single island platform serving the two tracks of the Medford Branch. It opened on December 12, 2022, as part of the Green Line Extension (GLX), which added two northern branches to the Green Line, and is served by the E branch.
East Somerville station is a light rail station on the Massachusetts Bay Transportation Authority (MBTA) Green Line located in southeastern Somerville, Massachusetts. The accessible station has a single island platform serving the two tracks of the Medford Branch. It opened on December 12, 2022, as part of the Green Line Extension (GLX), which added two northern branches to the Green Line, and is served by the E branch.
North Station is an underground MBTA subway station in downtown Boston, Massachusetts. Served by the Massachusetts Bay Transportation Authority (MBTA) Green Line and Orange Line, it is connected to the surface terminal of the same name used by MBTA Commuter Rail and Amtrak. The station is fully accessible.
↑ Belcher, Jonathan (January–February 2023). "MBTA Vehicle Inventory as of February 28, 2023". Rollsign. Vol.59, no.1–2. Boston Street Railway Association. p.10.
1 2 3 4 5 Karr, Ronald Dale (2017). The Rail Lines of Southern New England (2ed.). Branch Line Press. pp.338–346, 350–354. ISBN9780942147124.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Dana, Edward (October 1960 – July 1961). "Riverside Line Extension, 1959". Transportation Bulletin. No.65. Connecticut Valley Chapter of the National Railway Historical Society.
↑ "Chapter 45: Resolve providing for an investigation by the Division of Metropolitan Planning relative to the extension and development of rapid transit service in Boston, Somerville and surrounding cities and towns". Acts and resolves passed by the General Court of Massachusetts in the year 1924. May 24, 1924. pp.602–603 – via Internet Archive.
↑ Report on Improved Transportation Facilities in Boston. Division of Metropolitan Planning. December 1926. p.7. hdl:2027/mdp.39015049422689.
1 2 3 4 Clarke, Bradley H.; Cummings, O.R. (1997). Tremont Street Subway: A Century of Public Service. Boston Street Railway Association. pp.62–64. ISBN0938315048.
↑ "Subway Map"(PDF). Massachusetts Bay Transportation Authority. 2001. Archived from the original(PDF) on July 1, 2001.
1 2 "Executive Summary"(PDF). Program of Mass Transportation. Boston Regional Metropolitan Planning Organization. January 2004. pp.2–9. Archived from the original(PDF) on February 20, 2012.
↑ "Subway Service". Ridership and Service Statistics. Massachusetts Bay Transportation Authority. October 2003. p.2.19 – via Internet Archive.
↑ "MPO Agency Notes"(PDF). TRANSreport. Boston Region Metropolitan Planning Organization. April 2006 – via Internet Archive.
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