Green Line A branch

Green Line A branch
An A branch streetcar on Cambridge Street in 1968
Overview
Status	Abandoned
Locale	Boston, Newton, and Watertown
Termini	Park Street Watertown Yard
Service
Type	Light rail
System	Green Line (MBTA subway)
Operator(s)	MBTA (at time of closure)
Rolling stock	PCC streetcars (at time of closure)
History
Closed	June 20, 1969
Technical
Line length	7.3 miles (11.7 km)
Number of tracks	2
Track gauge	4 ft 8+1⁄2 in (1,435 mm)
Route map Legend to Lechmere Park Street Boylston Pleasant Street incline Arlington Copley E branch Auditorium Kenmore D branch C branch Blandford Street Portal Blandford Street Granby Street St. Mary's Street University Road Amory Street St. Paul Street Pleasant Street Braves Field Loop closed 1962 Alcorn Street B branch Packards Corner St. Luke's Street Chester Street Linden Street Harvard Avenue Allston Street Union Square Cambridge Street street-running stops Washington Street street-running stops Oak Square Oak Square Loop Washington Street street-running stops Newton Corner Galen Street street-running stops Watertown Yard This diagram: view talk edit

The A branch or Watertown Line was a streetcar line in the Boston, Massachusetts, area, operating as a branch of the Massachusetts Bay Transportation Authority Green Line. The line ran from Watertown through Newton Corner, Brighton, and Allston to Kenmore Square, then used the Boylston Street subway and Tremont Street subway to reach Park Street station.

Portions of the route were built as horsecar lines between 1858 and 1880. The segment between Union Square and Oak Square was electrified in 1889 as part of the Beacon Street line. By 1896, electric routes ran from Newton Corner (Nonantum Square) to downtown Boston via Brighton and via Watertown. Brighton service was extended to Watertown in 1912. The line was operated until 1969, when it was replaced by MBTA bus route 57, though it remained in service for non-revenue moves to Watertown Yard until 1994.