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 CREEK | Pennsylvania | Fair | 1936 | 90 | 100 |
| OVER BR OF LIMESTONE RUN | Pennsylvania | Fair | 1936 | 90 | 9,622 |
| OVER RAPID RUN | Pennsylvania | Fair | 1936 | 90 | 870 |
| OVER LITTLE BUFFALO CRK. | Pennsylvania | Fair | 1936 | 90 | 470 |
| BLACK RUN | Pennsylvania | Fair | 1936 | 90 | 228 |
| Tenmile Creek Tributary | Pennsylvania | Good | 1936 | 90 | 50 |
| Crafts Creek | Pennsylvania | Fair | 1936 | 90 | 40 |
| ROBBS RUN | Pennsylvania | Poor | 1936 | 90 | 600 |
| ROBBS RUN | Pennsylvania | Poor | 1936 | 90 | 600 |
| ROBBS RUN | Pennsylvania | Fair | 1936 | 90 | 700 |
| CARLEY BROOK | Pennsylvania | Fair | 1936 | 90 | 16,011 |
| Southwest PA Railroad | Pennsylvania | Fair | 1936 | 90 | 15,150 |
| POWDERMILL RUN | Pennsylvania | Fair | 1936 | 90 | 274 |
| BRANCH OF FOURMILE RUN | Pennsylvania | Fair | 1936 | 90 | 886 |
| PUCKETA CREEK | Pennsylvania | Fair | 1936 | 90 | 526 |
| Boyer Run | Pennsylvania | Poor | 1936 | 90 | 400 |
| Sewickley Creek | Pennsylvania | Poor | 1936 | 90 | 100 |
| SEWICKLEY CREEK | Pennsylvania | Fair | 1936 | 90 | 400 |
| Brush Creek | Pennsylvania | Fair | 1936 | 90 | 75 |
| Welty Run | Pennsylvania | Poor | 1936 | 90 | 60 |
| LINN RUN | Pennsylvania | Fair | 1936 | 90 | 135 |
| BOWMANS CREEK | Pennsylvania | Fair | 1936 | 90 | 7,644 |
| Yellow Breeches Creek | Pennsylvania | Fair | 1936 | 90 | 9,707 |
| NORFOLK SOUTHERN RAILROA | Pennsylvania | Fair | 1936 | 90 | 1,500 |
| HILLEGAS RUN | Pennsylvania | Poor | 1936 | 90 | 10 |
| ROBBS RUN | Pennsylvania | Fair | 1936 | 90 | 100 |
| Princess Run | Pennsylvania | Fair | 1936 | 90 | 100 |
| Little Wapwallopen Creek | Pennsylvania | Poor | 1936 | 90 | 75 |
| LAMBS CREEK | Pennsylvania | Fair | 1936 | 90 | - |
| MINEY BRANCH RUN | Pennsylvania | Poor | 1937 | 89 | 2,578 |
| OVER BESSEMER AVE | Pennsylvania | Good | 1937 | 89 | 16,855 |
| LITTLE SEWICKLEY CRK | Pennsylvania | Fair | 1937 | 89 | 20,496 |
| CROOKED RUN | Pennsylvania | Fair | 1937 | 89 | 19,749 |
| CROOKED RUN | Pennsylvania | Fair | 1937 | 89 | 19,749 |
| PLUM CREEK | Pennsylvania | Poor | 1937 | 89 | 5,300 |
| 2027 CSX LOCAL & YOUGH R | Pennsylvania | Fair | 1937 | 89 | 14,996 |
| S JEFFERSON / BIKE TRAIL | Pennsylvania | Fair | 1937 | 89 | 11,831 |
| TRIB TO BUFFALO CREEK | Pennsylvania | Fair | 1937 | 89 | 1,147 |
| N BR BRADYS RUN | Pennsylvania | Poor | 1937 | 89 | 536 |
| BAREFOOT RUN | Pennsylvania | Fair | 1937 | 89 | 1,524 |
| SCRUBGRASS CREEK | Pennsylvania | Fair | 1937 | 89 | 737 |
| RAYSTOWN BR JUNIATA RIV | Pennsylvania | Fair | 1937 | 89 | 218 |
| JOHNS BR RAYSTWN BR JUN | Pennsylvania | Fair | 1937 | 89 | 399 |
| RAYSTOWN BR.JUNIATA RIV. | Pennsylvania | Fair | 1937 | 89 | 82 |
| RAYSTOWN BR.JUNIATA RIV. | Pennsylvania | Fair | 1937 | 89 | 4,386 |
| CLEAR CREEK | Pennsylvania | Poor | 1937 | 89 | 122 |
| TR.LITTLE WILLS CREEK | Pennsylvania | Good | 1937 | 89 | 121 |
| EVITTS CREEK | Pennsylvania | Fair | 1937 | 89 | 410 |
| COVE RUN | Pennsylvania | Fair | 1937 | 89 | 142 |
| COVE RUN | Pennsylvania | Fair | 1937 | 89 | 100 |
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.