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 |
|---|---|---|---|---|---|
| PINE RUN | Pennsylvania | Fair | 1934 | 92 | 3,949 |
| BR.LITTLE TRAVERSE CREEK | Pennsylvania | Fair | 1934 | 92 | 474 |
| LITTLE SERVICE RUN | Pennsylvania | Good | 1934 | 92 | 342 |
| RAYSTOWN BR.JUNIATA RIV. | Pennsylvania | Fair | 1934 | 92 | 3,829 |
| TRIB.TO MOSELEM CREEK | Pennsylvania | Fair | 1934 | 92 | 29,775 |
| CACOOSING CREEK | Pennsylvania | Fair | 1934 | 92 | 16,737 |
| TRIB LITTLE SWATARA CK | Pennsylvania | Fair | 1934 | 92 | 2,801 |
| STONY RUN | Pennsylvania | Fair | 1934 | 92 | 199 |
| TRIB.TO WILLOW CREEK | Pennsylvania | Poor | 1934 | 92 | 2,237 |
| LITTLE LEHIGH CREEK | Pennsylvania | Fair | 1934 | 92 | 302 |
| TRIB TO IRONSTONE CREEK | Pennsylvania | Poor | 1934 | 92 | 1,675 |
| TRIB.TO SPRING CREEK | Pennsylvania | Fair | 1934 | 92 | 2,087 |
| LAUREL CREEK | Pennsylvania | Fair | 1934 | 92 | 3,032 |
| IRONSTONE CREEK | Pennsylvania | Poor | 1934 | 92 | 100 |
| TRIB.TO MAIDEN CREEK | Pennsylvania | Fair | 1934 | 92 | 300 |
| WILLOW CREEK | Pennsylvania | Poor | 1934 | 92 | 424 |
| BRUSH RUN | Pennsylvania | Fair | 1934 | 92 | 2,012 |
| MILL RUN | Pennsylvania | Good | 1934 | 92 | 889 |
| TRIB TO SUGAR CREEK | Pennsylvania | Fair | 1934 | 92 | 725 |
| TRIBUTARY BENTLEY CREEK | Pennsylvania | Good | 1934 | 92 | 547 |
| BR W BR NESHAMINY CREEK | Pennsylvania | Poor | 1934 | 92 | 45,881 |
| BRANCH LITTLE NESHAMINY | Pennsylvania | Poor | 1934 | 92 | 3,559 |
| GLADE RUN | Pennsylvania | Fair | 1934 | 92 | 20,253 |
| SULLIVAN RUN | Pennsylvania | Fair | 1934 | 92 | 300 |
| CHEST CREEK | Pennsylvania | Good | 1934 | 92 | 519 |
| HAYES CREEK | Pennsylvania | Good | 1934 | 92 | 1,971 |
| LOGAN BRANCH | Pennsylvania | Poor | 1934 | 92 | 14,674 |
| DEWITT RUN | Pennsylvania | Fair | 1934 | 92 | 254 |
| BEAVER CREEK | Pennsylvania | Poor | 1934 | 92 | 11,422 |
| MIDDLE BR WHITE CLAY CR | Pennsylvania | Fair | 1934 | 92 | 7,252 |
| DOE RUN | Pennsylvania | Fair | 1934 | 92 | 636 |
| BLACKBURN RUN | Pennsylvania | Fair | 1934 | 92 | 7 |
| STONY RUN | Pennsylvania | Good | 1934 | 92 | 499 |
| ALLEGHENY RIV/ABAND RR | Pennsylvania | Fair | 1934 | 92 | 1,887 |
| POTTS RUN | Pennsylvania | Fair | 1934 | 92 | 436 |
| MUDDY RUN | Pennsylvania | Fair | 1934 | 92 | 411 |
| GAZZAM RUN | Pennsylvania | Fair | 1934 | 92 | 779 |
| LAUREL RUN | Pennsylvania | Fair | 1934 | 92 | 6,024 |
| PENNA CANAL | Pennsylvania | Fair | 1934 | 92 | 14,443 |
| REEDS RUN | Pennsylvania | Fair | 1934 | 92 | 1,259 |
| DRURY RUN | Pennsylvania | Fair | 1934 | 92 | 20 |
| OVER WEST CREEK | Pennsylvania | Fair | 1934 | 92 | 556 |
| MUD RUN | Pennsylvania | Fair | 1934 | 92 | 191 |
| OVER FISHING CREEK | Pennsylvania | Fair | 1934 | 92 | 443 |
| OVER FRENCH CREEK | Pennsylvania | Poor | 1934 | 92 | 2,893 |
| OVER OIL CREEK E BRANCH | Pennsylvania | Fair | 1934 | 92 | 2,885 |
| OVER SHENANGO RIVER TRIB | Pennsylvania | Fair | 1934 | 92 | 957 |
| OVER PYMATUNING RES | Pennsylvania | Fair | 1934 | 92 | 939 |
| OVER INLET CREEK | Pennsylvania | Poor | 1934 | 92 | 2,904 |
| OVER LINESVILLE CREEK | Pennsylvania | Poor | 1934 | 92 | 250 |
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.