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 |
|---|---|---|---|---|---|
| BRANCH OF DANIEL RUN | Pennsylvania | Poor | 1939 | 87 | 63 |
| BANE CREEK | Pennsylvania | Fair | 1939 | 87 | 169 |
| SOUTH FORK OF CROSS CK. | Pennsylvania | Fair | 1939 | 87 | 229 |
| Fork of Bane Creek | Pennsylvania | Good | 1939 | 87 | 100 |
| Tenmile Creek | Pennsylvania | Good | 1939 | 87 | 50 |
| TINKERS RN CO RD ABND RR | Pennsylvania | Fair | 1939 | 87 | 27,533 |
| BRANCH OF BRUSH CREEK | Pennsylvania | Fair | 1939 | 87 | 27,533 |
| SR 3077 | Pennsylvania | Fair | 1939 | 87 | 29,116 |
| JACKS RUN | Pennsylvania | Fair | 1939 | 87 | 22,297 |
| SLATE CREEK | Pennsylvania | Poor | 1939 | 87 | 2,056 |
| BRANCH OF BRUSH RUN | Pennsylvania | Fair | 1939 | 87 | 1,974 |
| SR 0030 | Pennsylvania | Fair | 1939 | 87 | 224 |
| TR.SEWICKLEY CREEK | Pennsylvania | Fair | 1939 | 87 | 34,735 |
| SR 3093 | Pennsylvania | Fair | 1939 | 87 | 32,982 |
| PA TPK (I-76) | Pennsylvania | Good | 1939 | 87 | 240 |
| PA TPK (I-76) | Pennsylvania | Fair | 1939 | 87 | 1,188 |
| T-485 Slope Hill Rd | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| BRUSH CREEK | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| SR 2006 Mennonite Camp | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| JACOBS CREEK | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| JACOBS CREEK | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| JACOBS CREEK | Pennsylvania | Good | 1939 | 87 | 35,220 |
| PA TPK (I-76) | Pennsylvania | Fair | 1939 | 87 | 200 |
| JACOBS CREEK | Pennsylvania | Fair | 1939 | 87 | 34,232 |
| PA TPK (I-76) | Pennsylvania | Fair | 1939 | 87 | 2,341 |
| PA TPK (I-76) | Pennsylvania | Poor | 1939 | 87 | 387 |
| ROARING RUN CREEK | Pennsylvania | Fair | 1939 | 87 | 6,504 |
| UNT To Fishing Creek | Pennsylvania | Fair | 1939 | 87 | 1,907 |
| KREUTZ CREEK | Pennsylvania | Good | 1939 | 87 | 1,144 |
| BRANCH OF DEER CREEK | Pennsylvania | Good | 1939 | 87 | 374 |
| SEPTA;CHESTNUT HILL BR. | Pennsylvania | Fair | 1939 | 87 | 4,653 |
| SPRAGUE STREET(ONE WAY) | Pennsylvania | Fair | 1939 | 87 | 4,653 |
| AMTRAK (NE CORRIDOR) | Pennsylvania | Good | 1939 | 87 | 5,300 |
| TRIB. TO MILL CREEK | Pennsylvania | Poor | 1939 | 87 | 150 |
| MILL CREEK | Pennsylvania | Fair | 1939 | 87 | 50 |
| LITTLE CONEWAGO CREEK | Pennsylvania | Fair | 1940 | 86 | 1,832 |
| SWIFT RUN | Pennsylvania | Fair | 1940 | 86 | 1,832 |
| ROCK CREEK | Pennsylvania | Poor | 1940 | 86 | 667 |
| TRIB ROCK CREEK | Pennsylvania | Poor | 1940 | 86 | 667 |
| OPOSSUM CREEK | Pennsylvania | Fair | 1940 | 86 | 572 |
| SPRING RUN | Pennsylvania | Fair | 1940 | 86 | 450 |
| MARKEL RUN | Pennsylvania | Poor | 1940 | 86 | 500 |
| BR.BRUSH RUN | Pennsylvania | Good | 1940 | 86 | 26,458 |
| SR 0019 | Pennsylvania | Fair | 1940 | 86 | 762 |
| SR 3004 MCMURRAY RD | Pennsylvania | Good | 1940 | 86 | 30,066 |
| PINE CREEK | Pennsylvania | Fair | 1940 | 86 | 13,450 |
| HOMESTEAD RUN | Pennsylvania | Poor | 1940 | 86 | 13,386 |
| MONTOUR RUN | Pennsylvania | Fair | 1940 | 86 | 10,081 |
| NS RR ALLEGH R AVR RR | Pennsylvania | Fair | 1940 | 86 | 49,653 |
| LITTLE DEER CREEK | Pennsylvania | Poor | 1940 | 86 | 4,584 |
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.