Historic Bridges in Pennsylvania
6,062 bridges built before 1951 in Pennsylvania still in service today.
Bridges Built Before 1951
The United States has 6,062 bridges in Pennsylvania built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.
| Bridge | State | Condition | Year Built | Age (Years) | ADT |
|---|---|---|---|---|---|
| CSX-N Y SHORT LINE | Pennsylvania | Good | 1905 | 121 | 21,402 |
| CSX RAILROAD | Pennsylvania | Fair | 1905 | 121 | 25,141 |
| CSX N.Y.SHORT LINE | Pennsylvania | Fair | 1905 | 121 | 20,255 |
| SEPTA | Pennsylvania | Fair | 1905 | 121 | 5,500 |
| Branch of Poquessing Crk | Pennsylvania | Fair | 1905 | 121 | 300 |
| THOMPSON RUN | Pennsylvania | Poor | 1906 | 120 | 1,997 |
| GEDDES RUN | Pennsylvania | Fair | 1906 | 120 | 314 |
| PINE RUN | Pennsylvania | Fair | 1906 | 120 | 1,000 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 8,201 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 1,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 1,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 2,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 3,500 |
| MILL RACE | Pennsylvania | Fair | 1906 | 120 | 4,717 |
| SEPTA (P&W) | Pennsylvania | Fair | 1906 | 120 | 10,652 |
| WEST CREEK | Pennsylvania | Fair | 1906 | 120 | 650 |
| MACOBY CREEK | Pennsylvania | Fair | 1906 | 120 | 1,209 |
| SHAMOKIN CREEK | Pennsylvania | Poor | 1906 | 120 | 600 |
| KISKIMINETAS & NS R/R | Pennsylvania | Poor | 1906 | 120 | 398 |
| CONRAIL (ABANDONED) | Pennsylvania | Fair | 1906 | 120 | 79,131 |
| COBBS CREEK | Pennsylvania | Poor | 1906 | 120 | 6,335 |
| SEPTA | Pennsylvania | Fair | 1906 | 120 | 2,800 |
| NORFOLK SOUTHERN RR | Pennsylvania | Fair | 1907 | 119 | 1,750 |
| N-S RR WAVERLY AVE PAT | Pennsylvania | Poor | 1907 | 119 | 4,000 |
| IRONSTONE CREEK | Pennsylvania | Fair | 1907 | 119 | 4,748 |
| SIXPENNY CREEK | Pennsylvania | Fair | 1907 | 119 | 175 |
| SUGAR CREEK | Pennsylvania | Poor | 1907 | 119 | 100 |
| LITTLE BUFFALO RUN | Pennsylvania | Poor | 1907 | 119 | 200 |
| BONNIE BROOK | Pennsylvania | Poor | 1907 | 119 | 300 |
| SHAMONA CREEK | Pennsylvania | Fair | 1907 | 119 | 560 |
| OVER CONNEAUT CREEK TRIB | Pennsylvania | Good | 1907 | 119 | 978 |
| OVER MUDDY CREEK | Pennsylvania | Good | 1907 | 119 | 517 |
| COBBS CREEK | Pennsylvania | Fair | 1907 | 119 | 1,200 |
| W BR CONOCOCHEAGUE CREEK | Pennsylvania | Poor | 1907 | 119 | 518 |
| NORFOLK SOUTHERN RR | Pennsylvania | Poor | 1907 | 119 | 8,272 |
| NORFOLK SOUTHERN RR | Pennsylvania | Fair | 1907 | 119 | 4,902 |
| PEDESTRIAN TRAIL | Pennsylvania | Good | 1907 | 119 | 105 |
| OVER ROARING BRANCH | Pennsylvania | Fair | 1907 | 119 | 164 |
| TOWAMENCIN CREEK | Pennsylvania | Good | 1907 | 119 | 811 |
| PARK CREEK | Pennsylvania | Fair | 1907 | 119 | 7,612 |
| MUD CREEK | Pennsylvania | Poor | 1907 | 119 | 1 |
| JACOBY CREEK | Pennsylvania | Fair | 1907 | 119 | 2,297 |
| OSWAYO CREEK | Pennsylvania | Poor | 1907 | 119 | 50 |
| BEAVER DAM CREEK | Pennsylvania | Fair | 1907 | 119 | 25 |
| OVER WNYP R.R. | Pennsylvania | Poor | 1907 | 119 | 50 |
| OVER PINE CREEK | Pennsylvania | Poor | 1907 | 119 | 50 |
| BRANCH OF PETERS CREEK | Pennsylvania | Fair | 1907 | 119 | 11,534 |
| Little Daniels Run | Pennsylvania | Good | 1907 | 119 | 50 |
| YOUGHIOGHENY RIVER | Pennsylvania | Poor | 1907 | 119 | 6,557 |
| OTTER CREEK | Pennsylvania | Poor | 1907 | 119 | 333 |
About Historic Bridge Data
Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.