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 |
|---|---|---|---|---|---|
| MARTINS CREEK | Pennsylvania | Poor | 1911 | 115 | 7,047 |
| MARTINS CREEK | Pennsylvania | Poor | 1911 | 115 | 1,002 |
| MARTINS CREEK | Pennsylvania | Fair | 1911 | 115 | 1,002 |
| MUD RUN | Pennsylvania | Fair | 1911 | 115 | 150 |
| LITTLE MARTINS CREEK | Pennsylvania | Fair | 1911 | 115 | 350 |
| HOKENDAUQUA CREEK | Pennsylvania | Fair | 1911 | 115 | 150 |
| MARTINS CREEK | Pennsylvania | Fair | 1911 | 115 | 100 |
| MONOCACY CREEK | Pennsylvania | Fair | 1911 | 115 | 400 |
| INDIAN SPRINGS | Pennsylvania | Fair | 1911 | 115 | 3,150 |
| LITTLE SHAMOKIN CREEK | Pennsylvania | Fair | 1911 | 115 | 100 |
| SUGAR CAMP RUN | Pennsylvania | Poor | 1911 | 115 | 30 |
| OPEN GROUND | Pennsylvania | Fair | 1911 | 115 | 76,859 |
| CSX | Pennsylvania | Fair | 1911 | 115 | 14,000 |
| PLUM CREEK | Pennsylvania | Fair | 1912 | 114 | 9,112 |
| PINE CREEK | Pennsylvania | Fair | 1912 | 114 | 22,269 |
| WASHINGTON BLVD (RT 8) | Pennsylvania | Poor | 1912 | 114 | 8,000 |
| NORFOLK SOUTHERN RR | Pennsylvania | Fair | 1912 | 114 | 14,759 |
| IRONSTONE CREEK | Pennsylvania | Fair | 1912 | 114 | 1,457 |
| MONOCACY CREEK | Pennsylvania | Fair | 1912 | 114 | 276 |
| CLOVER CREEK | Pennsylvania | Poor | 1912 | 114 | 44 |
| SUGAR CREEK | Pennsylvania | Poor | 1912 | 114 | 150 |
| WAPPASENING CREEK | Pennsylvania | Poor | 1912 | 114 | 10 |
| SEPTA(DOYLESTOWN LINE) | Pennsylvania | Fair | 1912 | 114 | 14,724 |
| WATSON CREEK | Pennsylvania | Fair | 1912 | 114 | 200 |
| HERKAKEN CREEK | Pennsylvania | Poor | 1912 | 114 | 500 |
| BEAVER CREEK | Pennsylvania | Fair | 1912 | 114 | 100 |
| N BR SLIPPERY ROCK CR | Pennsylvania | Poor | 1912 | 114 | 101 |
| S BR SLIPPERY ROCK CR | Pennsylvania | Fair | 1912 | 114 | 100 |
| DAVIS RUN | Pennsylvania | Fair | 1912 | 114 | 500 |
| S FORK LIT SCRUBGRASS CR | Pennsylvania | Poor | 1912 | 114 | 50 |
| BRANDYWINE CREEK FLOOD | Pennsylvania | Good | 1912 | 114 | 7,797 |
| EAST BR.WHITE CLAY CREEK | Pennsylvania | Fair | 1912 | 114 | 1,642 |
| VALLEY CREEK | Pennsylvania | Fair | 1912 | 114 | 2,897 |
| OVER MILL RUN | Pennsylvania | Poor | 1912 | 114 | 1,000 |
| ELK CREEK | Pennsylvania | Good | 1912 | 114 | 5,781 |
| HOOVERS RUN | Pennsylvania | Fair | 1912 | 114 | 50 |
| BIG RUN | Pennsylvania | Fair | 1912 | 114 | 997 |
| WAMPUM RUN | Pennsylvania | Fair | 1912 | 114 | 97 |
| TAYLOR RUN TRIB | Pennsylvania | Fair | 1912 | 114 | 100 |
| TRIB. TO SAUCON CREEK | Pennsylvania | Fair | 1912 | 114 | 10,024 |
| MILL CREEK | Pennsylvania | Poor | 1912 | 114 | 727 |
| HUNGRY RUN | Pennsylvania | Fair | 1912 | 114 | 2,329 |
| McMICHAEL CREEK | Pennsylvania | Fair | 1912 | 114 | 189 |
| MARSHALL CREEK | Pennsylvania | Poor | 1912 | 114 | 10 |
| YERGERS CREEK | Pennsylvania | Fair | 1912 | 114 | 1,399 |
| BEAVER RUN | Pennsylvania | Poor | 1912 | 114 | 15 |
| LEHIGH RIVER | Pennsylvania | Fair | 1912 | 114 | 21,778 |
| BALLIARD CREEK | Pennsylvania | Poor | 1912 | 114 | 50 |
| OSWAYO CREEK | Pennsylvania | Fair | 1912 | 114 | 50 |
| READING/NORTHERN RR | Pennsylvania | Poor | 1912 | 114 | 1,711 |
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.