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 |
|---|---|---|---|---|---|
| OVER MOUSE RUN | Pennsylvania | Fair | 1922 | 104 | 1,228 |
| UNT to Susq. River | Pennsylvania | Fair | 1922 | 104 | 3,150 |
| PINE CREEK | Pennsylvania | Fair | 1922 | 104 | 2,857 |
| RBM&NRR | Pennsylvania | Poor | 1922 | 104 | 3,420 |
| MAHANTANGO CREEK | Pennsylvania | Fair | 1922 | 104 | 66 |
| DEEP CREEK | Pennsylvania | Poor | 1922 | 104 | 100 |
| DEEP CREEK | Pennsylvania | Poor | 1922 | 104 | 150 |
| DEEP CREEK | Pennsylvania | Fair | 1922 | 104 | 200 |
| LIZARD CREEK | Pennsylvania | Fair | 1922 | 104 | 600 |
| T.TO MAHANTANGO CREEK | Pennsylvania | Fair | 1922 | 104 | 211 |
| TRIB SUSQUEHANNA RIVER | Pennsylvania | Fair | 1922 | 104 | 106 |
| KERN RUN | Pennsylvania | Fair | 1922 | 104 | 460 |
| NORTH FORK OF BENS CREEK | Pennsylvania | Fair | 1922 | 104 | 2,072 |
| LITTLE GLADE RUN | Pennsylvania | Poor | 1922 | 104 | 25 |
| COXES CREEK | Pennsylvania | Poor | 1922 | 104 | 25 |
| OVER BEAR RUN | Pennsylvania | Good | 1922 | 104 | 49 |
| OVER JACKSON RUN | Pennsylvania | Poor | 1922 | 104 | 2,727 |
| BRANCH OF CROSS CREEK | Pennsylvania | Fair | 1922 | 104 | 163 |
| CHARTIERS CREEK | Pennsylvania | Poor | 1922 | 104 | 200 |
| ROBBS RUN | Pennsylvania | Poor | 1922 | 104 | 500 |
| TRIB W BR LACKAWAX RIVER | Pennsylvania | Fair | 1922 | 104 | 244 |
| AMTRAK MAIN LINE N-S | Pennsylvania | Fair | 1922 | 104 | 11,432 |
| SEPTA | Pennsylvania | Good | 1922 | 104 | 2,500 |
| CSX | Pennsylvania | Fair | 1922 | 104 | 5,700 |
| Trib to Northkill Ck | Pennsylvania | Fair | 1922 | 104 | 357 |
| NORTH BR. NESHAMANY CRK. | Pennsylvania | Fair | 1922 | 104 | 400 |
| UNION RAILROAD | Pennsylvania | Fair | 1923 | 103 | 9,286 |
| SUGAR CREEK | Pennsylvania | Fair | 1923 | 103 | 2,748 |
| SUGAR CREEK | Pennsylvania | Fair | 1923 | 103 | 2,748 |
| WILLOW CREEK | Pennsylvania | Poor | 1923 | 103 | 5,329 |
| MILL CREEK | Pennsylvania | Fair | 1923 | 103 | 782 |
| LITTLE MANATAWNY CREEK | Pennsylvania | Poor | 1923 | 103 | 307 |
| TAYLERS CREEK | Pennsylvania | Fair | 1923 | 103 | 1,588 |
| TRIB.OF DELAWARE RIVER | Pennsylvania | Fair | 1923 | 103 | 2,382 |
| BR.LITTLE NESHAMINY CR. | Pennsylvania | Fair | 1923 | 103 | 14,595 |
| S BR SLIPPERY ROCK CR | Pennsylvania | Fair | 1923 | 103 | 100 |
| LITTLE BUFFALO RUN | Pennsylvania | Poor | 1923 | 103 | 450 |
| W. BR. BRANDYWINE CREEK | Pennsylvania | Fair | 1923 | 103 | 2,237 |
| BIRCH RUN | Pennsylvania | Poor | 1923 | 103 | 432 |
| EAST BRANCH RED CLAY CR. | Pennsylvania | Fair | 1923 | 103 | 2,912 |
| POCOPSON CREEK | Pennsylvania | Fair | 1923 | 103 | 1,356 |
| VALLEY CREEK | Pennsylvania | Fair | 1923 | 103 | 1,497 |
| W BR BRANDYWINE CREEK | Pennsylvania | Fair | 1923 | 103 | 3,775 |
| W BR. WHITE CLAY CREEK | Pennsylvania | Fair | 1923 | 103 | 1,530 |
| LITTLE LICKING CREEK | Pennsylvania | Fair | 1923 | 103 | 3,331 |
| MOSHANNON CREEK | Pennsylvania | Fair | 1923 | 103 | 2 |
| TRIB TO FISHING CREEK | Pennsylvania | Poor | 1923 | 103 | 945 |
| GREEN CREEK | Pennsylvania | Poor | 1923 | 103 | 50 |
| NORFOLK SO. | Pennsylvania | Fair | 1923 | 103 | 15,837 |
| KELLOCK RUN | Pennsylvania | Fair | 1923 | 103 | 1,875 |
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.