21 bridges with vertical clearance data on SR-51 in Pennsylvania. Lowest: 135.8ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 135.8ft | Sr 0051 | Sr 0201 | Rostraver Township | 1960 | Map |
| 140.1ft | Pennsylvania Av | Tr 4013 | Sr 51 Over Tr 4013 | 1953 | Map |
| 140.1ft | Sr 51 Sb | 04136,641 Rp.A,& Local | 980' South Roch.Monaca Br | 1965 | Map |
| 142.1ft | Elizabeth Bridge | Sr837 2001 Csx Ns Mon Ri | Elizabeth Bridge | 1951 | Map |
| 142.4ft | Monaca & East Roch | Tr65Sb,Ohiorv,Ns Rr | Monaca & East Rochester | 1959 | Map |
| 144.4ft | Clairton Blvd. | Lebanon Church Rd | Inter. Of Leb.Church Rd | 1939 | Map |
| 146.7ft | Pennsylvania Ave | Sr 4016, Sharon Rd. | 1 Mi. North Of Sr 0068 | 1957 | Map |
| 147.6ft | Constitution Bl | Sr 3016-Franklin Avenue | Aliquippa Over Sr 3016 | 1963 | Map |
| 147.6ft | Beaver-Rocheste | Sr 65, Beaver R, N-S Rr | Beaver-Rochester Bridge | 1963 | Map |
| 149.0ft | Sr 51 North Bound | Sr 837, Nsrr, Local Rd. | Elizabeth Bridge | 1951 | Map |
| 160.1ft | Saw Mill Run Blvd | W Liberty Ave. Sr 3069 | 0.1 Mile S.Liberty Tunnel | 1999 | Map |
| 164.0ft | Sr 51 | 04136,641 Rp.A,& Local | 750' North Roch.Monaca Br | 1965 | Map |
| 165.7ft | Sr 0051 | Sr 0119 | North Union Township | 2008 | Map |
| 171.9ft | Sr 51 | Fallen Timber Run | 750' Nw Weigel Hill Rd | 2009 | Map |
| 185.0ft | Sr 0051 Sb | South Main Street | West End | 2010 | Map |
| 190.0ft | Constitution Blvd. | Sr 4042 (Market St) | Bridgewater O/Sr 4042 | 1958 | Map |
| 220.1ft | Pennsylvania Av | Norfolksouthern Railway | 6000' Se Ohio State Line | 1999 | Map |
| 233.9ft | Sr 51 | Csx Railroad | Sr 51 Over Csx Railroad | 2012 | Map |
| 244.1ft | Sr 51 S.B. | Nssr, Local Rd. | Elizabeth Bridge | 1951 | Map |
| 247.4ft | Coraopolis Blvd | Twp 142 & Montour Run | Over Twp.Rd.142 | 1929 | Map |
| 259.8ft | Sr 0051 Sb | Sr 0837 | Tr 51 Sb Over Tr 837 | 1951 | Map |