| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
|---|
| Apollo Bridge | PA 66 over Kiskiminetas River | Replaced with concrete bridge | Warren pony truss | 1937 | 2003 | -- | 704.1 |
| Ardara Pony Truss Bridge | Leger Road over Conrail Railroad | Closed to all traffic | Warren pony truss | 1902 | -- | 120.1 | 120.1 |
| Avonmore Bridge | PA 156 over Kiskiminetas River | Open to traffic | Parker through truss | 1937 | -- | 217.9 | 570.9 |
| Bairdstown Bridge | PA 2002 over Conemaugh River | Open to traffic | Baltimore through truss | 1934 | -- | 290.0 | 358.0 |
| Beaver Run Stream Bridge | Bell Point Road (TR 811) over Beaver Run Stream | Open to traffic | Closed-spandrel arch | 1920 | -- | 59.1 | 65.9 |
| Belle Vernon Bridge | I-70 over Monongahela River | Open to traffic | Steel through arch | 1951 | -- | 450.2 | 2066.0 |
| Belle Vernon Railroad Bridge | Wheeling & Lake Erie Railway over Monongahela River | Open to traffic | K-deck truss | -- | -- | -- | -- |
| Bells Mill Bridge | Bells Mill Bridge over Sewickley Creek | Open to light auto traffic | Other | 1850 | -- | 89.9 | 107.0 |
| Bow Ridge Aqueduct | Pennsylvania Main Line Aqueduct over Conemaugh River | | Arch | -- | -- | -- | -- |
| Bow Ridge Canal Tunnel | under | Closed to all traffic | Tunnel | 1830 | -- | -- | 817.0 |
| Branch of Brush Creek Bridge | PA 4010 over Branch of Brush Creek | Open to traffic | Closed-spandrel arch | 1929 | -- | 41.0 | 47.9 |
| Branch of Brush Creek Rail Bridge | rail over Brush Creek | | Stone arch | -- | -- | -- | -- |
| Branch Pucketa Creek Bridge | PA 4087 over Branch of Pucketa Creek | Closed to all traffic | Closed-spandrel arch | 1916 | -- | 25.9 | 30.8 |
| Brush Creek Bridge | PA 993 over Brush Creek | Gone | Pratt through truss | 1937 | -- | 146.0 | 147.0 |
| Brush Creek Bridge | PA 4012 over Brush Creek | Open to traffic | Closed-spandrel arch | 1921 | -- | 44.9 | 45.9 |
| Brush Creek Bridge | PA 4019 over Brush Creek | Open to traffic | Closed-spandrel arch | 1912 | -- | 61.0 | 65.0 |
| Buffenmeyer Rd RR Overpass | Norfolk Southern Railway over Buffenmeyer Rd. | Open to traffic | Stone arch | -- | -- | -- | -- |
| Buffenmeyer Road Bridge | Buffenmeyer Road over Conrail Mainline | Open to traffic | Warren pony truss | 1906 | -- | 92.9 | 92.9 |
| C.L. Schmitt Bridge at New Kensington | PA 1038 over Allegheny River | Open to traffic | Parker through truss | 1927 | -- | 370.1 | 1528.0 |
| Charleroi-Monessen Bridge | PA 2018 over Monongahela River | Demolished by PennDOT A Few Minutes Before 9:00 AM EDT, July 11, 2011 | Pennsylvania through truss | 1906 | 2011 | 400.0 | 1810.1 |
| College Ave. Railroad Overpass | Norfolk Southern Railway under College Ave. | | Tunnel | -- | -- | -- | -- |
| Conemaugh River Rail Bridge | Abandoned rail over Conemaugh River | | Stone arch | 1907 | -- | -- | -- |
| Conrail Bridge | PA 30 over Norfolk Southern Railway | Open to traffic | Closed-spandrel arch | 1936 | -- | 69.9 | 69.9 |
| Conrail Bridge | PA 1014 over Norfolk Southern Railway | Replaced by new bridge | Pony truss | 1902 | 1992 | 105.0 | 109.9 |
| Donora Webster Bridge | PA 1022 over Monongahela River | Closed due to structural problems | Pennsylvania through truss | 1906 | -- | 518.1 | 1547.0 |
| Four Mile Run Bridge | TR 880 over Four Mile Run | Open to traffic | Closed-spandrel arch | ca. 1920 | -- | 22.0 | 24.0 |
| Four Mile Run Bridge | TR 499 over Four Mile Run | Replaced by new bridge | Pony truss | -- | 1992 | 65.0 | 68.9 |
| Gibsonton Thru Truss | Bridge over Unnamed creek | Closed to all traffic | Pratt through truss | -- | -- | 100.0 | 100.0 |
| Hannas Run Bridge | PA 1017 over Hannas Run | Replaced by new bridge | Pony/through plate girder | 1928 | 2001 | 51.8 | 60.0 |
| Indian Creek Bridge | PA 381 over Indian Creek | Open to traffic | Closed-spandrel arch | 1916 | -- | 22.0 | 25.9 |
| Jack Creek Bridge | Bridge Street over Conrail Railroad and Jack Creek | Replaced by new bridge | Through truss | ca. 1920 | 1994 | 47.9 | 252.0 |
| Kiskiminetas River Bridge | Mill Bridge Road over Kiskiminetas River | Open to traffic | Pratt through truss | 1938 | -- | 149.0 | 704.1 |
| Laurel Hill Tunnel | Abandoned alignment of Pennsylvania Turnpike under | Closed to all traffic and used to test racecar aerodynamics. Chip Ganassi Racing. | Tunnel | 1940 | -- | -- | 4541.0 |
| Little Crabtree Creek Bridge | PA 1051 over Little Crabtree Creek | Open to traffic | Closed-spandrel arch | 1929 | -- | 24.9 | 28.9 |
| Loyalhanna Creek Bridge | PA 981 over Loyalhanna Creek | Open to traffic | Closed-spandrel arch | 1918 | -- | 96.1 | 215.9 |
| Loyalhanna Creek Bridge | PA 982 over Loyalhanna Creek | Gone | Pony truss | 1931 | 2009 | 126.0 | 258.9 |
| N&W Railroad Bridge | N&W Railroad over PA 3081 | Open to traffic | Through truss | ca. 1920 | -- | 129.9 | 129.9 |
| North Greengate Rd RR Bridge | Norfolk Southern Railway over North Greengate Rd. | Open to traffic | Concrete stringer | -- | -- | -- | -- |
| Pucketa Creek Bridge | Myers Driver over Pucketa Creek | Open to traffic | Pratt pony truss | ca. 1890 | 2005 | 64.0 | 67.9 |
| Roseytown Rd. Railroad Stone Arch | Norfolk & Southern Railroad over Roseytown Rd. | Open to traffic | Stone arch | -- | -- | -- | -- |
| Salina Bridge | PA 1060 over Kiskiminetas Creek | Open to traffic | Parker through truss | 1906 | -- | 220.2 | 669.0 |
| Seward Bridge | PA 56 over Norfolk Southern Railway | Open to traffic | Polygonal Warren pony truss | 1930 | -- | 108.9 | 417.0 |
| Smithton Bridge | PA Route 981 over Youghigheny River & Abandoned Railroad | Replaced by new bridge | Pratt through truss | 1900 | 1986 | -- | 733.0 |
| Smithton Bridge | Sr 0981 over Youghiogheny Riv/Bike Tr | Replaced by new bridge | Through truss | 1900 | 1986 | -- | -- |
| Tarentum Bridge | Bridge over Allegheny River | Open to traffic | Pratt deck truss | 1949 | -- | 445.9 | 1784.2 |
| Tunnelton Bridge | Pump Station Road (PA 3003) over Conemaugh River | Lost--Demolished and replaced with a slab of concrete. | Pennsylvania through truss | 1938 | 2010 | 396.0 | 401.9 |
| Twin Lakes Road RR Overpass | Norfolk Southern Railway over Twin Lakes Rd. | Open to traffic | Stone arch | -- | -- | -- | 56.0 |
| Vandergrift Bridge | PA 56 over Kiskiminetas River | Open to traffic | Parker through truss | 1933 | -- | 311.0 | 497.1 |
| West Leechburg Bridge | PA 4093 over Kiskiminetas River | Open to traffic | Parker through truss | 1935 | -- | 339.9 | 669.0 |
| West Newton Bridge | PA 136 over Youghiogheny River | Open to traffic | Parker through truss | 1907 | -- | 160.1 | 490.2 |