North Station

North Station is an underground MBTA subway station in Boston, Massachusetts. Served by the Massachusetts Bay Transportation Authority (MBTA) Green Line and Orange Line, it is connected to the North Station surface terminal used by MBTA Commuter Rail and Amtrak. The station is fully accessible. A surface streetcar terminal at Causeway Street, adjacent to North Union Station, was built in 1898 to serve the Tremont Street subway (predecessor to the modern Green Line). An elevated station for the Main Line (predecessor to the modern Orange Line) was added in 1901 as part of the Charlestown Elevated. A second elevated station was built in 1912 as part of the Causeway Street elevated, which acted as an extension of the Tremont Street subway. The Orange Line was moved underground in 1975 for the Haymarket North Extension project. The Green Line was added in 2004, forming a "superstation". Station layout North Station is located under Haverhill Street and adjacent buildings in the block between Causeway Street and Valenti Way. The station has two below-ground levels, with fare control and a side platform for northbound Green Line trains on the upper level. The lower level has an island platform used by southbound Green Line and Orange Line trains (allowing a cross-platform transfer), plus a separate side platform for northbound Orange Line trains. A passageway connects the upper level to the surface North Station terminal. History