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 |
|---|---|---|---|---|---|
| SWIFT RUN | Pennsylvania | Fair | 1929 | 97 | 12,324 |
| SOUTH BR OF CONEWAGO CK | Pennsylvania | Fair | 1929 | 97 | 14,378 |
| PLUM RUN | Pennsylvania | Fair | 1929 | 97 | 2,985 |
| SAW MILL RUN | Pennsylvania | Fair | 1929 | 97 | 40,495 |
| TWP 142 & MONTOUR RUN | Pennsylvania | Fair | 1929 | 97 | 13,117 |
| SAW MILL RUN | Pennsylvania | Fair | 1929 | 97 | 23,221 |
| DIRTY CAMP RUN | Pennsylvania | Poor | 1929 | 97 | 10,576 |
| DOLPHIN RUN | Pennsylvania | Good | 1929 | 97 | 2,998 |
| GIRTYS RUN | Pennsylvania | Good | 1929 | 97 | 13,030 |
| GIRTYS RUN | Pennsylvania | Fair | 1929 | 97 | 13,030 |
| BRUSH CREEK | Pennsylvania | Poor | 1929 | 97 | 3,000 |
| BIG SEWICKLEY CREEK | Pennsylvania | Fair | 1929 | 97 | 1,341 |
| N CHARLES STREET | Pennsylvania | Poor | 1929 | 97 | 400 |
| HILLSIDE | Pennsylvania | Poor | 1929 | 97 | 11,000 |
| N-S RR & EAST BUSWAY | Pennsylvania | Fair | 1929 | 97 | 9,821 |
| CHERRY RUN | Pennsylvania | Fair | 1929 | 97 | 8,009 |
| BRUSH RUN | Pennsylvania | Fair | 1929 | 97 | 75 |
| RAVERS RUN | Pennsylvania | Fair | 1929 | 97 | 1,645 |
| TRIB DUNNING CREEK | Pennsylvania | Fair | 1929 | 97 | 715 |
| BEAVER CREEK | Pennsylvania | Fair | 1929 | 97 | 266 |
| SHAFFERS CREEK | Pennsylvania | Fair | 1929 | 97 | 88 |
| E BR SIDELING HILL CREEK | Pennsylvania | Poor | 1929 | 97 | 121 |
| CROSSKILL CREEK | Pennsylvania | Fair | 1929 | 97 | 37,481 |
| ANTIETAM CREEK | Pennsylvania | Fair | 1929 | 97 | 35,002 |
| TR.LAUREL CK | Pennsylvania | Fair | 1929 | 97 | 9,745 |
| MECK CREEK | Pennsylvania | Poor | 1929 | 97 | 505 |
| SMOKY RUN | Pennsylvania | Fair | 1929 | 97 | 564 |
| FRTOWN.BR.JUNIATA RIVER | Pennsylvania | Poor | 1929 | 97 | 125 |
| TR. TO BECKWITH CREEK | Pennsylvania | Good | 1929 | 97 | 547 |
| DYERS CREEK | Pennsylvania | Fair | 1929 | 97 | 3,958 |
| AMTRAK MAIN;CANAL STR. | Pennsylvania | Fair | 1929 | 97 | 1,442 |
| UNAMI CREEK | Pennsylvania | Poor | 1929 | 97 | 1,665 |
| PINE RUN | Pennsylvania | Good | 1929 | 97 | 5,188 |
| MAHONING CREEK | Pennsylvania | Poor | 1929 | 97 | 403 |
| NITTANY CREEK | Pennsylvania | Fair | 1929 | 97 | 785 |
| MILL-RACE CREEK | Pennsylvania | Fair | 1929 | 97 | 14,824 |
| VALLEY CREEK | Pennsylvania | Poor | 1929 | 97 | 12,126 |
| POCOPSON CREEK | Pennsylvania | Fair | 1929 | 97 | 1,148 |
| BUCK RUN | Pennsylvania | Fair | 1929 | 97 | 2,763 |
| WEST BR. RED CLAY CREEK | Pennsylvania | Fair | 1929 | 97 | 5,713 |
| JORDAN RUN | Pennsylvania | Poor | 1929 | 97 | 150 |
| ECKERS RUN | Pennsylvania | Poor | 1929 | 97 | 316 |
| OVER WOODCOCK CREEK TRIB | Pennsylvania | Poor | 1929 | 97 | 2,040 |
| OPPOSSUM CREEK | Pennsylvania | Fair | 1929 | 97 | 100 |
| Norfolk Southern RR | Pennsylvania | Poor | 1929 | 97 | 18,893 |
| RIDLEY CREEK | Pennsylvania | Fair | 1929 | 97 | 7,934 |
| RIDLEY CREEK | Pennsylvania | Fair | 1929 | 97 | 1,505 |
| OVER MILLCREEK | Pennsylvania | Fair | 1929 | 97 | 9,156 |
| OVER LEBOEUF CREEK | Pennsylvania | Fair | 1929 | 97 | 5,398 |
| WALNUT CREEK | Pennsylvania | Poor | 1929 | 97 | 1,146 |
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.