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 |
|---|---|---|---|---|---|
| DARK SHADE CREEK | Pennsylvania | Poor | 1900 | 126 | 50 |
| STONYCREEK RIVER | Pennsylvania | Poor | 1900 | 126 | 50 |
| FLAUGHERTY CREEK | Pennsylvania | Poor | 1900 | 126 | — |
| SEESE RUN | Pennsylvania | Poor | 1900 | 126 | 300 |
| MUNCY CREEK | Pennsylvania | Fair | 1900 | 126 | 50 |
| LITTLE LOYALSOCK CREEK | Pennsylvania | Fair | 1900 | 126 | 11 |
| LOYALSOCK CREEK | Pennsylvania | Fair | 1900 | 126 | 54 |
| CHOCONUT CREEK | Pennsylvania | Fair | 1900 | 126 | 100 |
| CHOCONUT CREEK | Pennsylvania | Fair | 1900 | 126 | 100 |
| SNAKE CREEK | Pennsylvania | Poor | 1900 | 126 | 75 |
| E. BR. LACKAWANNA RIVER | Pennsylvania | Poor | 1900 | 126 | 50 |
| E.BRANCH TUNKHANNOCK CR. | Pennsylvania | Fair | 1900 | 126 | 75 |
| OVER CEDAR RUN | Pennsylvania | Fair | 1900 | 126 | 21 |
| CROOKED CREEK | Pennsylvania | Fair | 1900 | 126 | 150 |
| KELSEY CREEK | Pennsylvania | Fair | 1900 | 126 | 700 |
| LIMESTONE RUN | Pennsylvania | Fair | 1900 | 126 | 864 |
| SWEITZERS RUN | Pennsylvania | Fair | 1900 | 126 | 54 |
| N. BR. BUFFALO CREEK | Pennsylvania | Poor | 1900 | 126 | 119 |
| BUFFALO CREEK | Pennsylvania | Poor | 1900 | 126 | 150 |
| LIMESTONE RUN | Pennsylvania | Fair | 1900 | 126 | 1,944 |
| BUFFALO CREEK | Pennsylvania | Fair | 1900 | 126 | 300 |
| OVER BULLION RUN | Pennsylvania | Fair | 1900 | 126 | 1,056 |
| OVER CHERRYTREE RUN | Pennsylvania | Poor | 1900 | 126 | 100 |
| OVER LAKE CREEK | Pennsylvania | Fair | 1900 | 126 | 100 |
| LITTLE SCRUBGRASS CREEK | Pennsylvania | Fair | 1900 | 126 | 25 |
| MILL CREEK | Pennsylvania | Fair | 1900 | 126 | 100 |
| YOUGHIOGHENY RIV/BIKE TR | Pennsylvania | Fair | 1900 | 126 | 2,589 |
| SEPTA;CHESTNUTHILL W.BR. | Pennsylvania | Poor | 1900 | 126 | 8,308 |
| Bluff Run | Pennsylvania | Poor | 1900 | 126 | — |
| SHICKSHINNY CREEK | Pennsylvania | Fair | 1900 | 126 | 100 |
| ANGELICA CREEK | Pennsylvania | Fair | 1900 | 126 | — |
| Toms Creek | Pennsylvania | Fair | 1900 | 126 | 100 |
| WOLF RUN | Pennsylvania | Fair | 1900 | 126 | 5 |
| TOMS CREEK | Pennsylvania | Fair | 1901 | 125 | 675 |
| LICK RUN CREEK | Pennsylvania | Poor | 1901 | 125 | 1,115 |
| DOUGLAS RUN BRANCH | Pennsylvania | Fair | 1901 | 125 | 3,288 |
| NORFOLK SOUTHERN RR | Pennsylvania | Fair | 1901 | 125 | 3,000 |
| MARTINS CREEK | Pennsylvania | Fair | 1901 | 125 | 1,442 |
| LITTLE CONNOQUEN CR | Pennsylvania | Fair | 1901 | 125 | 100 |
| CATFISH RUN | Pennsylvania | Good | 1901 | 125 | 33 |
| RATTLESNAKE RUN | Pennsylvania | Fair | 1901 | 125 | 20 |
| FISHING CREEK | Pennsylvania | Poor | 1901 | 125 | 125 |
| OVER DECKARDS RUN | Pennsylvania | Fair | 1901 | 125 | 75 |
| OVER EAST BR. OIL CREEK | Pennsylvania | Poor | 1901 | 125 | 250 |
| SPRING CREEK | Pennsylvania | Fair | 1901 | 125 | 92 |
| STONY RUN | Pennsylvania | Fair | 1901 | 125 | 100 |
| ENLOW FORK WHEELING CK. | Pennsylvania | Poor | 1901 | 125 | 243 |
| SMITH CREEK | Pennsylvania | Good | 1901 | 125 | 25 |
| BIG RUN | Pennsylvania | Poor | 1901 | 125 | — |
| HELL RUN | Pennsylvania | Fair | 1901 | 125 | 75 |
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.