An outbound train at Boston University East station
Overview
Locale
Boston, Massachusetts, United States
Termini
Government Center
Boston College
Stations
23
Service
Type
Light rail
System
Green Line
Daily ridership
26,310 (weekday average boardings from surface stops only in 2010–2011)[1]
History
Opened
1896 (Kenmore–Packards Corner, Lake Street–Chestnut Hill Avenue) 1900 (Packards Corner–Chestnut Hill Avenue)
Technical
Character
Underground (Kenmore and eastward) Center median running (west of Kenmore)
Track gauge
4 ft 8+1⁄2 in (1,435 mm)
Electrification
600 V DC overhead
Route map
Legend
D and E branches
Government Center
Tremont Street subway
Park Street
Boylston
Boylston Street subway
Arlington
Copley
Copley Junction
E branch
Hynes Convention Center
Kenmore
D branch
C branch
Blandford Street portal
Blandford Street
Boston University East
Boston University Central
Amory Street
Babcock Street
A branch
Packards Corner
Fordham Road (closed 2004)
Harvard Avenue
Griggs Street/Long Avenue
Allston Street
Warren Street
Summit Avenue (closed 2004)
Washington Street
Mount Hood Road (closed 2004)
Sutherland Road
Chiswick Road
Chestnut Hill Avenue
South Street
Greycliff Road (closed 2004)
Boston College
Commonwealth Avenue
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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, the B branch 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.
As of February 2023[update], service operates on 8-minute headways at weekday peak hours and 8- to 12-minute headways at other times, using 9 to 15 trains (18 to 30 light rail vehicles).[2]
^"Ridership and Service Statistics" (PDF) (14th ed.). Massachusetts Bay Transportation Authority. 2014.
^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.
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