Subway
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Broad Street Bridge (Monroe County, New York)
Built 1836 as Erie Canal AqueductStone arch bridge over Genesee River on Subway Tunnel in RochesterOpen to traffic
Cincinnati Subway System (Hamilton County, Ohio)
Built 1920Abandoned tunnel on Cincinnati SubwayAbandoned. Never Operational
Dana Bridge (Middlesex County, Massachusetts)
Steel stringer bridge over Mystic River on MBTA Orange Line & Commuter Rail Haverhill LineOpen to traffic
George L. Anderson Memorial Bridge (Suffolk County, Massachusetts)
Steel through girder bridge over Neponset River on MBTA Red Line & Commuter RailOpen to railroad traffic
Lowline Park (Proposed) (New York County, New York)
Built 1908; Abandoned since 1948Abandoned tunnel on Formerly Brooklyn-Manhattan Transit CorporationAbandoned
Manhattan Bridge (New York County, New York)
Opened to traffic December 31, 1909Suspension bridge over East River in New York CityOpen to seven lanes of highway traffic and four subway tracks
MBTA - Adams Street Overpass (Suffolk County, Massachusetts)
Built 1911, converted to transit use 1926Pony/through plate girder bridge over Adams Street on MBTA Red Line - Ashmont BranchOpen to traffic
MBTA - Boylston Street Overpass (Middlesex County, Massachusetts)
Built 1917; abutments date to 1885Pony/through plate girder bridge over Boylston Street on MBTA Green LineOpen to traffic
MBTA - Dorchester Avenue Overpass (Suffolk County, Massachusetts)
Built 1911, converted to transit use 1926Steel stringer bridge over Dorchester Avenue on MBTA Red Line - Ashmont BranchOpen to traffic
MBTA - Southampton Street Yard Overpass (Suffolk County, Massachusetts)
Double-intersection Warren through truss bridge over Track 61 (Seaport Branch) on MBTA Red Line Cabot Yard LeadOpen to traffic
NYCTA - 53rd Street Tunnel (New York County, New York)
Built 1932Tunnel under East River on IND Queens Boulevard LineOpen to traffic
NYCTA - Concourse Tunnel (New York County, New York)
Built 1932Tunnel under Harlem River on IND Concourse LineOpen to traffic
NYCTA - Culver Viaduct (Kings County, New York)
Built 1929Through truss bridges over Gowanus Canal/2nd Avenue/3rd Avenue/4th Avenue on New York City Transit AuthorityOpen to traffic
NYCTA - Greenpoint Tube (Queens County, New York)
Built 1932Tunnel under Newtown Creek on New York City Metropolitan Transit AuthorityOpen to traffic
Williamsburg Bridge (Kings County, New York)
Opened to traffic December 19, 1903; major rehabilitation in 1997Suspension bridge over East River on Delancey Street in New YorkOpen to traffic