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 |
|---|---|---|---|---|---|
| Second Street | Pennsylvania | Fair | 1908 | 118 | 21,000 |
| CONRAIL(Abandoned) | Pennsylvania | Fair | 1908 | 118 | 2,800 |
| Midvale Avenue | Pennsylvania | Fair | 1908 | 118 | 400 |
| BUFFALO CREEK | Pennsylvania | Fair | 1908 | 118 | 721 |
| SAW MILL RUN CREEK | Pennsylvania | Poor | 1909 | 117 | 30 |
| POTTER CREEK | Pennsylvania | Fair | 1909 | 117 | 174 |
| PERKIOMEN CREEK | Pennsylvania | Fair | 1909 | 117 | 1,723 |
| IRONSTONE CREEK | Pennsylvania | Fair | 1909 | 117 | 100 |
| MILL RUN | Pennsylvania | Good | 1909 | 117 | 11,341 |
| PINEY CREEK | Pennsylvania | Poor | 1909 | 117 | 219 |
| BEAVER CREEK | Pennsylvania | Poor | 1909 | 117 | 200 |
| POTTS RUN | Pennsylvania | Fair | 1909 | 117 | 45 |
| CONODOGUINET CREEK | Pennsylvania | Fair | 1909 | 117 | 341 |
| SR 0230 AMTRAK NSRC | Pennsylvania | Fair | 1909 | 117 | 8,140 |
| COBBS CREEK | Pennsylvania | Fair | 1909 | 117 | 12,715 |
| GEORGES CREEK | Pennsylvania | Poor | 1909 | 117 | 25 |
| FALLING SPRINGS CR | Pennsylvania | Fair | 1909 | 117 | 8,162 |
| SHANNON RUN | Pennsylvania | Fair | 1909 | 117 | 40 |
| SPRUCE CREEK | Pennsylvania | Fair | 1909 | 117 | 350 |
| MILL RUN | Pennsylvania | Poor | 1909 | 117 | 50 |
| COCALICO CREEK | Pennsylvania | Poor | 1909 | 117 | 522 |
| NESHANNOCK CREEK | Pennsylvania | Poor | 1909 | 117 | 18,779 |
| TRIB. OF NESCOPECK CREEK | Pennsylvania | Fair | 1909 | 117 | 25 |
| OVER CLARK RUN | Pennsylvania | Good | 1909 | 117 | 431 |
| Shenango River | Pennsylvania | Poor | 1909 | 117 | 3,024 |
| KISH. CREEK | Pennsylvania | Poor | 1909 | 117 | — |
| SCIOTO CREEK | Pennsylvania | Fair | 1909 | 117 | 784 |
| E. BR. CHILLISQUAQUE CK. | Pennsylvania | Good | 1909 | 117 | 108 |
| BEAVER RUN | Pennsylvania | Fair | 1909 | 117 | 376 |
| HOKENDAUQUA CREEK | Pennsylvania | Fair | 1909 | 117 | 13,770 |
| SLATEFORD CREEK | Pennsylvania | Poor | 1909 | 117 | 2,941 |
| HOKENDAUQUA CREEK | Pennsylvania | Fair | 1909 | 117 | 100 |
| MONOCACY CK RR CITY ST | Pennsylvania | Fair | 1909 | 117 | 4,000 |
| ZIMMERMAN CREEK | Pennsylvania | Poor | 1909 | 117 | 50 |
| CARLEY BROOK | Pennsylvania | Fair | 1909 | 117 | 372 |
| S BR CODORUS CREEK | Pennsylvania | Fair | 1909 | 117 | 400 |
| TACONY CREEK | Pennsylvania | Fair | 1909 | 117 | 78,114 |
| CONRAIL(BURIED) | Pennsylvania | Fair | 1909 | 117 | 98,564 |
| CONRAIL(TRACKS REMOVED) | Pennsylvania | Fair | 1909 | 117 | 83,001 |
| AMTRAK | Pennsylvania | Poor | 1909 | 117 | 3,200 |
| Former Crse Frankford Cr | Pennsylvania | Fair | 1909 | 117 | 13,600 |
| Former Crse Frankford Cr | Pennsylvania | Fair | 1909 | 117 | 13,600 |
| SEPTA | Pennsylvania | Fair | 1909 | 117 | 2,000 |
| BERMUDIAN CREEK | Pennsylvania | Fair | 1910 | 116 | 124 |
| SAW MILL RUN | Pennsylvania | Fair | 1910 | 116 | 14,731 |
| LITTLE DEER CREEK | Pennsylvania | Fair | 1910 | 116 | 41 |
| DIRTY CAMP RUN | Pennsylvania | Poor | 1910 | 116 | 100 |
| BUFFALO & PITTSBURG RR | Pennsylvania | Poor | 1910 | 116 | 45 |
| PINE RUN | Pennsylvania | Fair | 1910 | 116 | 50 |
| PATTERSON CREEK | Pennsylvania | Good | 1910 | 116 | 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.