Joralemon Street Tunnel

The Joralemon Street Tunnel, originally called the Brooklyn-Battery Tunnel, carries the trains of the IRT Lexington Avenue Line of the New York City Subway under the East River from the Bowling Green neighborhood (State Street) in Manhattan to Joralemon Street and Willow Place in Brooklyn. It was the first underwater subway tunnel connecting Manhattan and Brooklyn, with construction taking place between 1903 and 1907.

The Eastern Parkway Line is one of the lines of the IRT division of the New York City Subway, stretching from Downtown Brooklyn south along Flatbush Avenue and east along Eastern Parkway to Crown Heights. After passing Utica Avenue, the line rises onto an elevated structure and becomes the New Lots Line to the end at New Lots Avenue in East New York, Brooklyn. The west end of the Eastern Parkway Line is at the Joralemon Street Tunnel under the East River.