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.

Clear
Bridge State Condition Year Built Age (Years) ADT
Trib. to Susquehanna Pennsylvania Fair 1934 92 5,810
MOUNTAIN CREEK Pennsylvania Fair 1934 92 10,564
CONEWAGO CREEK Pennsylvania Fair 1934 92 3,882
IRON MINE RUN Pennsylvania Poor 1934 92 696
W BRANCH OF RATTLING CR Pennsylvania Fair 1934 92 372
COBBS CREEK Pennsylvania Poor 1934 92 27,899
RIDLEY CREEK Pennsylvania Fair 1934 92 19,569
OVER MILL CREEK Pennsylvania Poor 1934 92 -
OVER COLEMAN RUN Pennsylvania Poor 1934 92 100
EBR Antietam Creek Pennsylvania Fair 1934 92 14,219
Norfolk Southern RR Pennsylvania Fair 1934 92 8,673
Muddy Run Pennsylvania Fair 1934 92 1,098
PAXTONS RUN Pennsylvania Fair 1934 92 1,478
DRY RUN Pennsylvania Fair 1934 92 455
FALLS CREEK Pennsylvania Fair 1934 92 100
TR.LITTLE AUGHWICK CREEK Pennsylvania Fair 1934 92 359
PALMER RUN Pennsylvania Fair 1934 92 224
PUMPKIN RUN Pennsylvania Fair 1934 92 1,422
JUNIATA RIVER Pennsylvania Fair 1934 92 5,260
SPRING CREEK Pennsylvania Fair 1934 92 1,020
TUSCARORA CREEK Pennsylvania Poor 1934 92 58
TUSCARORA CREEK Pennsylvania Poor 1934 92 58
YELLOW CREEK Pennsylvania Poor 1934 92 696
S BR OF TWO LICK CR Pennsylvania Poor 1934 92 142
CONEMAUGH RIVER Pennsylvania Fair 1934 92 1,333
ELDERS RUN Pennsylvania Poor 1934 92 411
MUDLICK RUN Pennsylvania Poor 1934 92 478
PANTHER RUN Pennsylvania Fair 1934 92 2,246
PINE RUN Pennsylvania Fair 1934 92 126
LITTLE SANDY CREEK Pennsylvania Good 1934 92 205
BR W BR WALLENPAUPACK CR Pennsylvania Poor 1934 92 1,201
LITITZ RUN Pennsylvania Fair 1934 92 13,648
INDIAN RUN Pennsylvania Fair 1934 92 2,659
LITTLE COCALICO CREEK Pennsylvania Fair 1934 92 5,566
CONOY CREEK Pennsylvania Fair 1934 92 628
BACK RUN Pennsylvania Poor 1934 92 2,390
MUDDY CREEK Pennsylvania Fair 1934 92 620
TRIB. TO HOSENSACK CREEK Pennsylvania Fair 1934 92 2,035
OVER UPPER PINE BOT RUN Pennsylvania Fair 1934 92 396
OVER LICK RUN Pennsylvania Fair 1934 92 94
OVER LITTLE SHENANGO TR Pennsylvania Fair 1934 92 3,344
Little Shenango Branch Pennsylvania Poor 1934 92 32
Shenango River Branch Pennsylvania Fair 1934 92 23
Saul Run Pennsylvania Fair 1934 92 214
POHOPOCO CREEK Pennsylvania Fair 1934 92 11,391
POHOPOCO CREEK Pennsylvania Fair 1934 92 9,256
SUGAR HOLLOW CREEK Pennsylvania Poor 1934 92 1,296
SAND HILL CREEK Pennsylvania Poor 1934 92 450
VALLEY CREEK Pennsylvania Fair 1934 92 13,270
W. BR. NESHAMINY CREEK Pennsylvania Poor 1934 92 30,106

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.