Independent Subway System

Reporting mark: IND; ISS
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LIRR - Broad Channel Bridge (Queens County, New York)
Built 1880; Replaced 1956
Through truss bridge over Jamaica Bay on Long Island RR
Replaced by a new bridge

NYCTA - 53rd Street Tunnel (New York County, New York)
Built 1932
Tunnel under East River on IND Queens Boulevard Line
Open to traffic

NYCTA - Beach Channel Drawbridge (Queens County, New York)
Built 1956
Warren through truss bridge over Jamaica Bay on New York City Metropolitan Transit Authority
Open to traffic

NYCTA - Broad Channel Drawbridge (Queens County, New York)
Built 1956
Warren through truss bridge over Broad Channel on New York City Metropolitan Transit Authority
Open to traffic

NYCTA - Concourse Tunnel (New York County, New York)
Built 1932
Tunnel under Harlem River on IND Concourse Line
Open to traffic

NYCTA - Cranberry Street Tunnel (New York County, New York)
Built 1932
Tunnel under East River on IND Eighth Avenue Line
Open to traffic

NYCTA - Culver Viaduct (Kings County, New York)
Built 1929
Truss bridge over Gowanus Canal/2nd Avenue/3rd Avenue/4th Avenue on New York City Transit Authority
Open to traffic

NYCTA - Greenpoint Tube (Queens County, New York)
Built 1932
Tunnel under Newtown Creek on New York City Metropolitan Transit Authority
Open to traffic

NYCTA - Liberty Avenue-Rockaway Transfer (Queens County, New York)
Deck plate girder bridge over Liberty Avenue, Rockaway Boulevard, 99th & 98th Streets on New York City Transit Authority
Open to traffic

NYCTA - Rutgers Street Tunnel (New York County, New York)
Built 1932
Tunnel under East River on New York City Transit Authority
Open to traffic