Chrystie Street Connection

The Chrystie Street Connection is a New York City Subway junction, one of the few connections between lines of the (former) BMT and IND divisions, which together constitute the system's B Division. A major branch of the IND Sixth Avenue Line, it connects the Sixth Avenue Line to the BMT Brighton Line via the north side of the Manhattan Bridge and the BMT Jamaica Line over the Williamsburg Bridge. The project, opened in 1967 and 1968, also includes the Sixth Avenue Line's Grand Street and 57th Street stations, the latter of which is not part of the connection itself.

The connection was originally conceived as part of the long delayed Second Avenue Subway, and is one of the few completed sections of the project.

The two tracks that run the full length of the connection begin as a continuation of the IND Sixth Avenue Line express tracks east of Broadway–Lafayette Street. These tracks include the line's only station, Grand Street, and connections to the two northern tracks over the Manhattan Bridge. The IND Sixth Avenue Line express tracks formerly continued east, ending slightly east of the Second Avenue station, and were planned to extend into Brooklyn and beyond as part of a never-built major system expansion called the IND Second System. Those tracks still exist at Second Avenue station, but now connect to the local tracks west of the station.

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