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Red Line (MBTA)

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View of Boston from the Red Line
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View of Boston from the Red Line

An MBTA Red Line train leaving Charles/MGH station bound for Alewife.
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An MBTA Red Line train leaving Charles/MGH station bound for Alewife.

The Red Line is the newest of the MBTA rapid transit lines in the Boston, Massachusetts area. Its northwestern terminal is at Alewife near Fresh Pond Parkway and Route 2 in West Cambridge, from which it passes through downtown, with transfers to the Green Line at Park Street and the Orange Line at Downtown Crossing. South of downtown it splits into two branches; one branch runs to Braintree and the other to Ashmont, with the Ashmont-Mattapan High Speed Line continuing to Mattapan.

History

The oldest right-of-way on the Red Line is south of South Boston, where the Ashmont Branch was built on the path of the former Shawmut Branch Railroad. That railroad was incorporated in 1870, taken over by the Old Colony Railroad, and opened in 1872 as an alternate route between the Old Colony's main line at Harrison Square and the Dorchester and Milton Branch Railroad, which branched from the Old Colony at Neponset and ran west to Mattapan.

The Red Line was the last of the four lines to begin construction, with the Cambridge Tunnel opening from Eliot Yard and Harvard to Park Street on the Tremont Street Subway on March 23, 1912. At Harvard, a prepayment station was provided for easy transfer to streetcar routes operating in a separate tunnel (now the Harvard Bus Tunnel). The tunnel ran from Harvard under Massachusetts Avenue and Main Street to the Longfellow Bridge, where it ran along the middle of the bridge (opened in 1906). On the Boston side of the bridge, the line became elevated, rising to go over Charles Circle and into a tunnel through Beacon Hill to Park Street. Extensions (built as the Dorchester Tunnel) to Washington Street and South Station opened on April 4, 1915 and December 3, 1916, with transfers to the Washington Street Tunnel and Atlantic Avenue Elevated respectively. Further extensions opened to Broadway on December 15, 1917 and Andrew on June 29, 1918, both prepayment stations for streetcar transfer. The Broadway station included an upper level with its own tunnel for streetcars, which was abandoned in 1919 due to most lines being truncated to Andrew. The upper level has since been incorporated into the mezzanine.

Old Colony and later New York, New Haven and Hartford Railroad passenger service operated on the Shawmut Branch until September 4, 1926. [link] The MBTA bought the branch and opened the first phase of the Dorchester Extension to Fields Corner on November 5, 1927.([Disputed statementdisputed]