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 |
|---|---|---|---|---|---|
| BRANCH NAAMANS CREEK | Pennsylvania | Poor | 1916 | 110 | 8,790 |
| LITTLE TOBY CREEK | Pennsylvania | Poor | 1916 | 110 | 50 |
| NORTH BRANCH BROWNS RUN | Pennsylvania | Good | 1916 | 110 | 598 |
| WHITETHORN RUN | Pennsylvania | Fair | 1916 | 110 | 30 |
| Mill Creek | Pennsylvania | Poor | 1916 | 110 | 817 |
| CONESTOGA RIVER | Pennsylvania | Poor | 1916 | 110 | 175 |
| TWO MILE RUN | Pennsylvania | Fair | 1916 | 110 | 100 |
| MOUNTAIN RUN CREEK | Pennsylvania | Poor | 1916 | 110 | 4,717 |
| POCONO CREEK | Pennsylvania | Good | 1916 | 110 | 1,474 |
| SHAMOKIN CREEK | Pennsylvania | Fair | 1916 | 110 | 1,600 |
| WHITES CREEK | Pennsylvania | Poor | 1916 | 110 | 25 |
| MILLER RUN | Pennsylvania | Fair | 1916 | 110 | 50 |
| ROARING RUN | Pennsylvania | Fair | 1916 | 110 | 50 |
| JENNINGS RUN | Pennsylvania | Fair | 1916 | 110 | 75 |
| ZIMMERMAN CREEK | Pennsylvania | Fair | 1916 | 110 | 40 |
| RAPID RUN | Pennsylvania | Fair | 1916 | 110 | 50 |
| PETERS CREEK | Pennsylvania | Fair | 1916 | 110 | 5,427 |
| PIKE RUN | Pennsylvania | Poor | 1916 | 110 | 1,392 |
| PIGEON CREEK | Pennsylvania | Good | 1916 | 110 | 100 |
| INDIAN CREEK | Pennsylvania | Poor | 1916 | 110 | 387 |
| BUTTERMILK CREEK | Pennsylvania | Fair | 1916 | 110 | 150 |
| SO BRANCH CODORUS CREEK | Pennsylvania | Fair | 1916 | 110 | 21 |
| FOX RUN | Pennsylvania | Fair | 1916 | 110 | 1,414 |
| FRANKFORD CREEK | Pennsylvania | Fair | 1916 | 110 | 10,849 |
| SEPTA (CHESTNUT HILL W) | Pennsylvania | Fair | 1916 | 110 | 13,160 |
| CONRAIL | Pennsylvania | Poor | 1916 | 110 | 3,200 |
| SEPTA (Chestnut Hill W.) | Pennsylvania | Good | 1916 | 110 | 5,600 |
| LACKAWANNA RIVER | Pennsylvania | Fair | 1916 | 110 | 170 |
| SCHUYLKILL RIVER | Pennsylvania | Poor | 1917 | 109 | 1,086 |
| WILLOW CREEK | Pennsylvania | Fair | 1917 | 109 | 472 |
| INDIAN CORN CREEK | Pennsylvania | Poor | 1917 | 109 | 200 |
| NEWTOWN CREEK | Pennsylvania | Poor | 1917 | 109 | 500 |
| RAPP CREEK | Pennsylvania | Poor | 1917 | 109 | 200 |
| S BR SLIPPERY ROCK CR | Pennsylvania | Fair | 1917 | 109 | 50 |
| OVER DELMATER RUN | Pennsylvania | Fair | 1917 | 109 | 2,040 |
| OVER MUDDY CREEK | Pennsylvania | Poor | 1917 | 109 | 373 |
| NS RAILROAD | Pennsylvania | Poor | 1917 | 109 | 2,042 |
| BR OF LITTLE REDSTONE CK | Pennsylvania | Fair | 1917 | 109 | 3,196 |
| OVER LOWER SHERIFF RUN | Pennsylvania | Fair | 1917 | 109 | 139 |
| WHITELEY CREEK | Pennsylvania | Poor | 1917 | 109 | 97 |
| BRANCH OF WHITELEY CREEK | Pennsylvania | Fair | 1917 | 109 | 203 |
| GREAT TROUGH CREEK | Pennsylvania | Poor | 1917 | 109 | 24 |
| DEL-LACK RR/ROARING BRK | Pennsylvania | Poor | 1917 | 109 | 2,000 |
| MILL CREEK | Pennsylvania | Poor | 1917 | 109 | 300 |
| MILL CREEK | Pennsylvania | Poor | 1917 | 109 | 150 |
| POCONO NORTHEAST RR | Pennsylvania | Fair | 1917 | 109 | 6,850 |
| SCHUYLKILL CANAL | Pennsylvania | Fair | 1917 | 109 | 12,713 |
| LITTLE MARTINS CREEK | Pennsylvania | Fair | 1917 | 109 | 200 |
| E. BR. WALLENPAUPACK CK. | Pennsylvania | Fair | 1917 | 109 | 150 |
| MILL CREEK | Pennsylvania | Poor | 1917 | 109 | 1,781 |
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.