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 |
|---|---|---|---|---|---|
| Trib. to Susquehanna | Pennsylvania | Fair | 1934 | 92 | 5,810 |
| MOUNTAIN CREEK | Pennsylvania | Fair | 1934 | 92 | 10,564 |
| CONEWAGO CREEK | Pennsylvania | Fair | 1934 | 92 | 3,882 |
| IRON MINE RUN | Pennsylvania | Poor | 1934 | 92 | 696 |
| W BRANCH OF RATTLING CR | Pennsylvania | Fair | 1934 | 92 | 372 |
| COBBS CREEK | Pennsylvania | Poor | 1934 | 92 | 27,899 |
| RIDLEY CREEK | Pennsylvania | Fair | 1934 | 92 | 19,569 |
| OVER MILL CREEK | Pennsylvania | Poor | 1934 | 92 | - |
| OVER COLEMAN RUN | Pennsylvania | Poor | 1934 | 92 | 100 |
| EBR Antietam Creek | Pennsylvania | Fair | 1934 | 92 | 14,219 |
| Norfolk Southern RR | Pennsylvania | Fair | 1934 | 92 | 8,673 |
| Muddy Run | Pennsylvania | Fair | 1934 | 92 | 1,098 |
| PAXTONS RUN | Pennsylvania | Fair | 1934 | 92 | 1,478 |
| DRY RUN | Pennsylvania | Fair | 1934 | 92 | 455 |
| FALLS CREEK | Pennsylvania | Fair | 1934 | 92 | 100 |
| TR.LITTLE AUGHWICK CREEK | Pennsylvania | Fair | 1934 | 92 | 359 |
| PALMER RUN | Pennsylvania | Fair | 1934 | 92 | 224 |
| PUMPKIN RUN | Pennsylvania | Fair | 1934 | 92 | 1,422 |
| JUNIATA RIVER | Pennsylvania | Fair | 1934 | 92 | 5,260 |
| SPRING CREEK | Pennsylvania | Fair | 1934 | 92 | 1,020 |
| TUSCARORA CREEK | Pennsylvania | Poor | 1934 | 92 | 58 |
| TUSCARORA CREEK | Pennsylvania | Poor | 1934 | 92 | 58 |
| YELLOW CREEK | Pennsylvania | Poor | 1934 | 92 | 696 |
| S BR OF TWO LICK CR | Pennsylvania | Poor | 1934 | 92 | 142 |
| CONEMAUGH RIVER | Pennsylvania | Fair | 1934 | 92 | 1,333 |
| ELDERS RUN | Pennsylvania | Poor | 1934 | 92 | 411 |
| MUDLICK RUN | Pennsylvania | Poor | 1934 | 92 | 478 |
| PANTHER RUN | Pennsylvania | Fair | 1934 | 92 | 2,246 |
| PINE RUN | Pennsylvania | Fair | 1934 | 92 | 126 |
| LITTLE SANDY CREEK | Pennsylvania | Good | 1934 | 92 | 205 |
| BR W BR WALLENPAUPACK CR | Pennsylvania | Poor | 1934 | 92 | 1,201 |
| LITITZ RUN | Pennsylvania | Fair | 1934 | 92 | 13,648 |
| INDIAN RUN | Pennsylvania | Fair | 1934 | 92 | 2,659 |
| LITTLE COCALICO CREEK | Pennsylvania | Fair | 1934 | 92 | 5,566 |
| CONOY CREEK | Pennsylvania | Fair | 1934 | 92 | 628 |
| BACK RUN | Pennsylvania | Poor | 1934 | 92 | 2,390 |
| MUDDY CREEK | Pennsylvania | Fair | 1934 | 92 | 620 |
| TRIB. TO HOSENSACK CREEK | Pennsylvania | Fair | 1934 | 92 | 2,035 |
| OVER UPPER PINE BOT RUN | Pennsylvania | Fair | 1934 | 92 | 396 |
| OVER LICK RUN | Pennsylvania | Fair | 1934 | 92 | 94 |
| OVER LITTLE SHENANGO TR | Pennsylvania | Fair | 1934 | 92 | 3,344 |
| Little Shenango Branch | Pennsylvania | Poor | 1934 | 92 | 32 |
| Shenango River Branch | Pennsylvania | Fair | 1934 | 92 | 23 |
| Saul Run | Pennsylvania | Fair | 1934 | 92 | 214 |
| POHOPOCO CREEK | Pennsylvania | Fair | 1934 | 92 | 11,391 |
| POHOPOCO CREEK | Pennsylvania | Fair | 1934 | 92 | 9,256 |
| SUGAR HOLLOW CREEK | Pennsylvania | Poor | 1934 | 92 | 1,296 |
| SAND HILL CREEK | Pennsylvania | Poor | 1934 | 92 | 450 |
| VALLEY CREEK | Pennsylvania | Fair | 1934 | 92 | 13,270 |
| W. BR. NESHAMINY CREEK | Pennsylvania | Poor | 1934 | 92 | 30,106 |
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.