New Castle, Pennsylvania
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Big Run Bridge (Lawrence County, Pennsylvania)
Built 1904; rehabilitated 1940Closed-spandrel arch bridge over Big Run on Ellwood RoadOpen to traffic
CSX - PA18 Overpass (Lawrence County, Pennsylvania)
Steel stringer bridge over PA 18 on CSX RailroadOpen to traffic
CSX - Shenango River Bridge (Lawrence County, Pennsylvania)
Deck plate girder bridge over Shenango River on CSX - frmr B&O and P&LE RRsOpen to traffic
East Washington Street Bridge (Lawrence County, Pennsylvania)
Built 1909Concrete arch bridge over Neshannock Creek on East Washington Street in New CastleOpen to traffic
Frew Mill Road Bridge (Older) (Lawrence County, Pennsylvania)
Lost Through truss bridge over Slippery rock Creek on Frew Mill RoadReplaced by a new bridge
Grant Street Bridge (Lawrence County, Pennsylvania)
Built 1914Through truss bridge over Shenango River on Grant Street in New CastleDemolished and replaced.
Grove Street Bridge (Lawrence County, Pennsylvania)
Built 1950; replaced 2010Lost Steel stringer bridge over Neshannock Creek on Grove StreetReplaced by a new bridge
Harmony Line - Cascade Park Viaduct (Lawrence County, Pennsylvania)
Built 1908; Line closed 1931Pratt through truss bridge over Buffalo, Rochester & Pittsburgh Railway & Big Run on Pittsburgh, Harmony, Butler, & New Castle RailwayRemoved
Jefferson Street Bridge (Lawrence County, Pennsylvania)
Built 1914Concrete arch bridge over Big Run on Jefferson Street in New CastleOpen to traffic
Jefferson Street Bridge (Lawrence County, Pennsylvania)
Built 1921; replaced 2012Lost Pony/through plate girder bridge over Neshannock Creek on South Jefferson StreetReplaced by a new bridge
KRL - Shenango River Bridge (Lawrence County, Pennsylvania)
Constructed from August 1901-02 by the BR&P, B&O and P&LE.Whipple and Pratt through truss bridge over Shenango River on the New Castle Industrial Railroad.
Liberty Street Bridge (Lawrence County, Pennsylvania)
Built 1960; rehabilitated 2010Deck plate girder bridge over Mahoning River on Liberty StreetOpen to traffic
Mahoning Avenue Viaduct (Lawrence County, Pennsylvania)
Built 1923-24. Rehabilitated 1940, 1957-61; 1986; 2016-2018.Through truss bridge over Shenango River on Mahoning Avenue in New CastleOpen to traffic
Mahoning River Bridge (Lawrence County, Pennsylvania)
Built 1932Through truss bridge over Mahoning River on TR 395 (Old PA 18) in New CastleIntact but closed to all traffic
Neshannock Creek Bridge (Lawrence County, Pennsylvania)
Built 1929; rehabilitated 1986Pony/through plate girder bridge over Neshannock Creek on North StreetOpen to traffic
Old Black Bridge (Covered) (Lawrence County, Pennsylvania)
Built 1815; destroyed by flood 1913Lost Through truss bridge over Shenango River on RoadDestroyed by flooding
South Mill Street Bridge (Old) (Lawrence County, Pennsylvania)
Built 1917; rehabilitated 1982; replaced 2013Through truss bridge over Neshannock Creek on Mill Street in New CastleReplaced by a new bridge
Washington Street Overpass (Lawrence County, Pennsylvania)
Built 1924Girder bridge over NCIR Railroad on West Washington StreetOpen to traffic
Willowgrove Road Bridge (Lawrence County, Pennsylvania)
Built 1921Concrete through arch bridge over Hickory Run on Willowgrove Road in New CastleClosed to all traffic