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 |
|---|---|---|---|---|---|
| MILL CREEK | Pennsylvania | Fair | 1936 | 90 | 321 |
| WELCH RUN | Pennsylvania | Fair | 1936 | 90 | 528 |
| LITTLE SANDY CREEK | Pennsylvania | Good | 1936 | 90 | 177 |
| CATHERS RUN | Pennsylvania | Poor | 1936 | 90 | 50 |
| STONEY RUN | Pennsylvania | Fair | 1936 | 90 | 414 |
| DOE RUN | Pennsylvania | Poor | 1936 | 90 | 175 |
| DELAWARE CREEK | Pennsylvania | Poor | 1936 | 90 | 1,678 |
| EAST LICKING CREEK | Pennsylvania | Poor | 1936 | 90 | 50 |
| SUMMIT LAKE CREEK | Pennsylvania | Fair | 1936 | 90 | 22,983 |
| LEGGETTS CREEK | Pennsylvania | Fair | 1936 | 90 | 20,826 |
| CHIQUES CREEK | Pennsylvania | Fair | 1936 | 90 | 3,500 |
| Norfolk Southern RR | Pennsylvania | Good | 1936 | 90 | 7,968 |
| CONEWAGO CREEK | Pennsylvania | Fair | 1936 | 90 | 816 |
| QUITTAPAHILLA CREEK | Pennsylvania | Fair | 1936 | 90 | 3,924 |
| SWATARA CREEK | Pennsylvania | Fair | 1936 | 90 | 1,144 |
| PRIVATE RD.& L.CEDAR CK. | Pennsylvania | Fair | 1936 | 90 | 20,101 |
| ABANDONED E & L RAILROAD | Pennsylvania | Fair | 1936 | 90 | 511 |
| MARSH CREEK | Pennsylvania | Good | 1936 | 90 | 210 |
| SOLOMON CREEK | Pennsylvania | Fair | 1936 | 90 | 815 |
| FALLS RUN | Pennsylvania | Fair | 1936 | 90 | 70 |
| PINE RUN | Pennsylvania | Poor | 1936 | 90 | 227 |
| WEST BRANCH RUN | Pennsylvania | Fair | 1936 | 90 | 50 |
| BOLIVAR RUN | Pennsylvania | Poor | 1936 | 90 | 4,769 |
| STRODES RUN | Pennsylvania | Fair | 1936 | 90 | 250 |
| PENNYPACK CREEK | Pennsylvania | Fair | 1936 | 90 | 21,544 |
| PENNYPACK TRAIL | Pennsylvania | Fair | 1936 | 90 | 21,544 |
| SEPTA | Pennsylvania | Fair | 1936 | 90 | 25,373 |
| NORFOLK SOUTHERN RR | Pennsylvania | Poor | 1936 | 90 | 36,517 |
| SEPTA (NEWTOWN BR); CSX | Pennsylvania | Fair | 1936 | 90 | 15,733 |
| MILL CREEK | Pennsylvania | Fair | 1936 | 90 | 6,605 |
| JENKINTOWN CREEK | Pennsylvania | Poor | 1936 | 90 | 4,500 |
| BRANCH MACOBY CREEK | Pennsylvania | Fair | 1936 | 90 | 150 |
| OVER MUD CREEK | Pennsylvania | Fair | 1936 | 90 | 124 |
| SAUCON CREEK | Pennsylvania | Poor | 1936 | 90 | - |
| FISHING CREEK | Pennsylvania | Poor | 1936 | 90 | 17,646 |
| VALLEY ST | Pennsylvania | Good | 1936 | 90 | 17,646 |
| HORNBECK CREEK | Pennsylvania | Poor | 1936 | 90 | 1,227 |
| MASTHOPE CREEK | Pennsylvania | Fair | 1936 | 90 | 537 |
| MIDDLE BR BUSHKILL CREEK | Pennsylvania | Fair | 1936 | 90 | 20 |
| MAHANNON CREEK | Pennsylvania | Good | 1936 | 90 | 17,751 |
| OVER SUSQUEHECKA CREEK | Pennsylvania | Fair | 1936 | 90 | 384 |
| ALLEN CREEK | Pennsylvania | Poor | 1936 | 90 | 96 |
| FALL CREEK | Pennsylvania | Poor | 1936 | 90 | 50 |
| FALL CREEK | Pennsylvania | Poor | 1936 | 90 | 50 |
| WELLS CREEK | Pennsylvania | Fair | 1936 | 90 | 50 |
| RHINEY CREEK | Pennsylvania | Good | 1936 | 90 | 1,930 |
| STARRUCCA CREEK | Pennsylvania | Fair | 1936 | 90 | 502 |
| OVER COWANESQUE RIVER | Pennsylvania | Fair | 1936 | 90 | 3,839 |
| OVER COWANESQUE RIVER | Pennsylvania | Fair | 1936 | 90 | 1,177 |
| OVER COWANESQUE RIVER | Pennsylvania | Fair | 1936 | 90 | 716 |
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.