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 |
|---|---|---|---|---|---|
| HAMMER CREEK | Pennsylvania | Fair | 1930 | 96 | 11,455 |
| FURNACE RUN | Pennsylvania | Poor | 1930 | 96 | 9,664 |
| MUDDY CREEK | Pennsylvania | Poor | 1930 | 96 | 5,968 |
| CALAMUS RUN | Pennsylvania | Fair | 1930 | 96 | 4,197 |
| HAMMER CREEK | Pennsylvania | Poor | 1930 | 96 | 370 |
| LITTLE CONESTOGA CREEK | Pennsylvania | Poor | 1930 | 96 | 620 |
| LITITZ RUN | Pennsylvania | Poor | 1930 | 96 | 775 |
| LITTLE CONESTOGA CREEK | Pennsylvania | Poor | 1930 | 96 | 520 |
| W BR DONEGAL CREEK | Pennsylvania | Poor | 1930 | 96 | 310 |
| MILL CREEK | Pennsylvania | Poor | 1930 | 96 | 620 |
| HOTTENBAUGH RUN | Pennsylvania | Poor | 1930 | 96 | 3,416 |
| L BEAVER CRK NORTH FORK | Pennsylvania | Poor | 1930 | 96 | 100 |
| E BR OF HAMMER CREEK | Pennsylvania | Fair | 1930 | 96 | 879 |
| TRIB SWATARA CRK. | Pennsylvania | Fair | 1930 | 96 | 200 |
| TRIB SWATARA CREEK | Pennsylvania | Fair | 1930 | 96 | 200 |
| OWL RUN | Pennsylvania | Fair | 1930 | 96 | 500 |
| STREAM TRIB TO MILL CR. | Pennsylvania | Poor | 1930 | 96 | 50 |
| TULPEHOCKEN CREEK | Pennsylvania | Fair | 1930 | 96 | 150 |
| SNITZ CREEK | Pennsylvania | Fair | 1930 | 96 | 450 |
| ONTELAUNEE CREEK | Pennsylvania | Fair | 1930 | 96 | 9,244 |
| KISTLER CREEK | Pennsylvania | Fair | 1930 | 96 | 277 |
| LEHIGH RIVER & N/S RR | Pennsylvania | Fair | 1930 | 96 | 9,562 |
| SWITZER CREEK | Pennsylvania | Poor | 1930 | 96 | 1,641 |
| TRIB. TO LYON CREEK | Pennsylvania | Fair | 1930 | 96 | 1,946 |
| NORFOLK SOUTHERN RR | Pennsylvania | Fair | 1930 | 96 | 1,500 |
| MILL CREEK | Pennsylvania | Fair | 1930 | 96 | 16,498 |
| BLACK CREEK | Pennsylvania | Fair | 1930 | 96 | 470 |
| BRANCH HUNLOCK CREEK | Pennsylvania | Good | 1930 | 96 | 206 |
| BALLIET RUN | Pennsylvania | Fair | 1930 | 96 | 854 |
| SUSQUEHANNA RIVER | Pennsylvania | Fair | 1930 | 96 | 250 |
| OVER FROZEN RUN | Pennsylvania | Fair | 1930 | 96 | 2,779 |
| LYCOMING CREEK | Pennsylvania | Good | 1930 | 96 | 2,779 |
| OVER LYCOMING CREEK | Pennsylvania | Good | 1930 | 96 | 2,779 |
| OVER GREGGS CREEK | Pennsylvania | Fair | 1930 | 96 | 3,914 |
| OVER SUGAR RUN | Pennsylvania | Fair | 1930 | 96 | 3,914 |
| OVER SUGAR RUN | Pennsylvania | Fair | 1930 | 96 | 3,441 |
| BROAD RUN | Pennsylvania | Fair | 1930 | 96 | 505 |
| OVER TR OF LITTLE PINE C | Pennsylvania | Good | 1930 | 96 | 143 |
| TRIB TO LITTLE PINE CR. | Pennsylvania | Good | 1930 | 96 | 143 |
| MILL CREEK | Pennsylvania | Fair | 1930 | 96 | 80 |
| ENGLISH RUN | Pennsylvania | Poor | 1930 | 96 | 52 |
| MOSQUITO CREEK | Pennsylvania | Fair | 1930 | 96 | 51 |
| PENNBROOK RUN | Pennsylvania | Fair | 1930 | 96 | 1,044 |
| PENNBROOK RUN | Pennsylvania | Poor | 1930 | 96 | 1,044 |
| SINNEMAHONING PORTAGE CR | Pennsylvania | Fair | 1930 | 96 | 40 |
| OVER OTTER CREEK TRIB | Pennsylvania | Fair | 1930 | 96 | 2,222 |
| OVER WOLF CREEK TRIB | Pennsylvania | Poor | 1930 | 96 | 3,657 |
| OVER BUTCHERY RUN | Pennsylvania | Fair | 1930 | 96 | 1,686 |
| TEA CREEK | Pennsylvania | Fair | 1930 | 96 | 5,997 |
| COFFEE RUN | Pennsylvania | Fair | 1930 | 96 | 300 |
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.