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 |
|---|---|---|---|---|---|
| WHEELING CREEK TRIB | Pennsylvania | Fair | 1887 | 139 | 50 |
| ROBINSON FORK | Pennsylvania | Poor | 1887 | 139 | 20 |
| PIKE RUN | Pennsylvania | Poor | 1887 | 139 | 500 |
| YELLOW BREECHES CREEK | Pennsylvania | Poor | 1887 | 139 | 263 |
| ALLEGHENY CREEK | Pennsylvania | Fair | 1888 | 138 | 1,625 |
| NESHAMINY CREEK | Pennsylvania | Poor | 1888 | 138 | 50 |
| EAST BR BRANDYWINE CREEK | Pennsylvania | Poor | 1888 | 138 | 290 |
| TROUT CREEK | Pennsylvania | Poor | 1888 | 138 | 50 |
| POTATO CREEK | Pennsylvania | Poor | 1888 | 138 | 450 |
| SWAMP CREEK | Pennsylvania | Fair | 1888 | 138 | 750 |
| SHAMOKIN CREEK | Pennsylvania | Fair | 1888 | 138 | 50 |
| OVER OIL CREEK | Pennsylvania | Fair | 1888 | 138 | 100 |
| WISSAHICKON CREEK | Pennsylvania | Poor | 1888 | 138 | 15,917 |
| Wissahickon Creek | Pennsylvania | Fair | 1888 | 138 | 3,400 |
| MONTOUR RUN | Pennsylvania | Good | 1889 | 137 | 650 |
| DEER CREEK | Pennsylvania | Fair | 1889 | 137 | 88 |
| LITTLE SEWICKLEY CREEK | Pennsylvania | Fair | 1889 | 137 | 266 |
| BRUSH CREEK | Pennsylvania | Fair | 1889 | 137 | 25 |
| YELLOW CREEK | Pennsylvania | Fair | 1889 | 137 | 20 |
| TULPEHOCKEN CREEK | Pennsylvania | Poor | 1889 | 137 | 11 |
| MORRIS RUN | Pennsylvania | Fair | 1889 | 137 | 200 |
| LITTLE ELK CREEK | Pennsylvania | Poor | 1889 | 137 | 427 |
| WEST BR RED CLAY CREEK | Pennsylvania | Fair | 1889 | 137 | 659 |
| SOUTH BR. FRENCH CREEK | Pennsylvania | Poor | 1889 | 137 | 565 |
| OVER CONNEAUT CREEK | Pennsylvania | Fair | 1889 | 137 | 250 |
| YELLOW BREECHES CREEK | Pennsylvania | Fair | 1889 | 137 | 2,808 |
| BENNETT BR SINNEMAHONING | Pennsylvania | Good | 1889 | 137 | 10 |
| FRENCH CREEK | Pennsylvania | Poor | 1889 | 137 | 30 |
| FRANKSTOWN BR JUNIATA R | Pennsylvania | Good | 1889 | 137 | 256 |
| GREAT TROUGH CREEK | Pennsylvania | Poor | 1889 | 137 | 82 |
| SHAVER CREEK | Pennsylvania | Poor | 1889 | 137 | 136 |
| NESHANNOCK CREEK | Pennsylvania | Fair | 1889 | 137 | 50 |
| OVER PINE CREEK | Pennsylvania | Fair | 1889 | 137 | 776 |
| BERTSCH CREEK | Pennsylvania | Fair | 1889 | 137 | 1,238 |
| WHITE DEER HOLE CREEK | Pennsylvania | Poor | 1889 | 137 | 13 |
| OVER BROKENSTRAW CREEK | Pennsylvania | Poor | 1889 | 137 | 148 |
| RACCOON CREEK | Pennsylvania | Good | 1889 | 137 | 15 |
| DELAWARE RIVER | Pennsylvania | Fair | 1889 | 137 | 180 |
| Conewago Creek | Pennsylvania | Fair | 1889 | 137 | 294 |
| TOMS CREEK | Pennsylvania | Fair | 1890 | 136 | 2,578 |
| DAYS RUN | Pennsylvania | Poor | 1890 | 136 | 1,899 |
| MILLERS RUN | Pennsylvania | Fair | 1890 | 136 | 1,300 |
| MILLERS RUN | Pennsylvania | Fair | 1890 | 136 | 250 |
| MONTOUR RUN | Pennsylvania | Good | 1890 | 136 | 5,216 |
| UNAMI CREEK / 2806-E4 | Pennsylvania | Poor | 1890 | 136 | 3,005 |
| STONYCREEK RIVER | Pennsylvania | Fair | 1890 | 136 | 34 |
| BLACK CREEK | Pennsylvania | Poor | 1890 | 136 | 50 |
| OVER CONNEAUT OUTLET | Pennsylvania | Poor | 1890 | 136 | 250 |
| BIG SPRING CREEK | Pennsylvania | Fair | 1890 | 136 | 251 |
| HOOVERS RUN | Pennsylvania | Fair | 1890 | 136 | 50 |
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.