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
WISSAHICKON CREEK Pennsylvania Fair 1907 119 18,036
CONRAIL (Abolished) Pennsylvania Fair 1907 119 6,700
CONRAIL Pennsylvania Good 1907 119 6,300
Pennypack Creek Pennsylvania Poor 1907 119 10,000
PINE RUN Pennsylvania Good 1907 119 431
CONEMAUGH RIVER Pennsylvania Poor 1907 119 30
PAT AIRPORT BUSWAY Pennsylvania Fair 1908 118 12,700
SCHENLEY PARK STREAM Pennsylvania Fair 1908 118 50
SCHENLEY PARK STREAM Pennsylvania Fair 1908 118 50
MONOCACY CREEK Pennsylvania Poor 1908 118 1,254
MONOCACY CREEK Pennsylvania Fair 1908 118 671
BR. OF PERKIOMEN CREEK Pennsylvania Poor 1908 118 1,255
FURNACE CREEK Pennsylvania Poor 1908 118 112
CLOVER CREEK Pennsylvania Poor 1908 118 667
CLOVER CREEK Pennsylvania Fair 1908 118 218
TOWANDA CREEK Pennsylvania Fair 1908 118 150
RIDGE VALLEY CREEK Pennsylvania Good 1908 118 4,451
LITTLE YELLOW CREEK Pennsylvania Fair 1908 118 200
HALF MOON CREEK Pennsylvania Poor 1908 118 467
DARBY CREEK Pennsylvania Poor 1908 118 5,415
PICKERING CREEK Pennsylvania Fair 1908 118 474
LITTLE CLEARFIELD CREEK Pennsylvania Fair 1908 118 70
OVER ROARING CREEK Pennsylvania Fair 1908 118 152
LETORT SPRING CREEK Pennsylvania Poor 1908 118 22,247
PAXTON CREEK Pennsylvania Fair 1908 118
CONNELL RUN Pennsylvania Fair 1908 118 2,994
BROWNS RUN Pennsylvania Poor 1908 118 30
BROWNS RUN Pennsylvania Fair 1908 118 30
RATHMEL RUN Pennsylvania Fair 1908 118 578
MAHANTANGO CREEK Pennsylvania Fair 1908 118 776
WHITE OAK RUN Pennsylvania Poor 1908 118 200
OSWAYO CREEK Pennsylvania Poor 1908 118
PORTAGE CREEK Pennsylvania Poor 1908 118 25
Mill Creek Pennsylvania Poor 1908 118 43
HONEY CREEK Pennsylvania Fair 1908 118 834
SKIPPACK CREEK Pennsylvania Fair 1908 118 2,965
SKIPPACK CREEK Pennsylvania Poor 1908 118 26
MILL CREEK Pennsylvania Fair 1908 118 2,740
ALLEGHENY CREEK Pennsylvania Fair 1908 118 150
DRAKE RUN Pennsylvania Poor 1908 118 256
HIGGINS RUN Pennsylvania Poor 1908 118 477
ROARING RUN Pennsylvania Poor 1908 118 109
ROARING RUN Pennsylvania Fair 1908 118 109
GLADDENS RUN Pennsylvania Poor 1908 118 100
LOWER TWO MILE RUN Pennsylvania Poor 1908 118 250
RACCOON CREEK Pennsylvania Fair 1908 118 50
WELTY RUN Pennsylvania Poor 1908 118 1,033
AMTRAK Pennsylvania Fair 1908 118 19,989
SEPTA Pennsylvania Fair 1908 118 10,110
AMTRAK ; CONRAIL Pennsylvania Good 1908 118 11,500

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.