Tremont Street subway

Common card · No. 383321

The Tremont Street subway in Boston's MBTA subway system is the oldest subway tunnel in North America and the third-oldest still in use worldwide to exclusively use electric traction (after the City and South London Railway in 1890, and the Budapest Metro's Line 1 in 1896), opening on September 1, 1897. With the tunnels construction authorized by the General Court, its construction was supervised by Howard A. Carson as chief engineer. Its primary objective was to get streetcar lines off the traffic-clogged streets instead of as a true rapid transit line, and its construction was partially influenced by the blizzard of 1888 which resulted in transportation gridlock. It now forms the central part of the Green Line, connecting Boylston Street to Park Street and Government Center stations.

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