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
PINE CREEK Pennsylvania Fair 1936 90 100
OVER BR OF LIMESTONE RUN Pennsylvania Fair 1936 90 9,622
OVER RAPID RUN Pennsylvania Fair 1936 90 870
OVER LITTLE BUFFALO CRK. Pennsylvania Fair 1936 90 470
BLACK RUN Pennsylvania Fair 1936 90 228
Tenmile Creek Tributary Pennsylvania Good 1936 90 50
Crafts Creek Pennsylvania Fair 1936 90 40
ROBBS RUN Pennsylvania Poor 1936 90 600
ROBBS RUN Pennsylvania Poor 1936 90 600
ROBBS RUN Pennsylvania Fair 1936 90 700
CARLEY BROOK Pennsylvania Fair 1936 90 16,011
Southwest PA Railroad Pennsylvania Fair 1936 90 15,150
POWDERMILL RUN Pennsylvania Fair 1936 90 274
BRANCH OF FOURMILE RUN Pennsylvania Fair 1936 90 886
PUCKETA CREEK Pennsylvania Fair 1936 90 526
Boyer Run Pennsylvania Poor 1936 90 400
Sewickley Creek Pennsylvania Poor 1936 90 100
SEWICKLEY CREEK Pennsylvania Fair 1936 90 400
Brush Creek Pennsylvania Fair 1936 90 75
Welty Run Pennsylvania Poor 1936 90 60
LINN RUN Pennsylvania Fair 1936 90 135
BOWMANS CREEK Pennsylvania Fair 1936 90 7,644
Yellow Breeches Creek Pennsylvania Fair 1936 90 9,707
NORFOLK SOUTHERN RAILROA Pennsylvania Fair 1936 90 1,500
HILLEGAS RUN Pennsylvania Poor 1936 90 10
ROBBS RUN Pennsylvania Fair 1936 90 100
Princess Run Pennsylvania Fair 1936 90 100
Little Wapwallopen Creek Pennsylvania Poor 1936 90 75
LAMBS CREEK Pennsylvania Fair 1936 90 -
MINEY BRANCH RUN Pennsylvania Poor 1937 89 2,578
OVER BESSEMER AVE Pennsylvania Good 1937 89 16,855
LITTLE SEWICKLEY CRK Pennsylvania Fair 1937 89 20,496
CROOKED RUN Pennsylvania Fair 1937 89 19,749
CROOKED RUN Pennsylvania Fair 1937 89 19,749
PLUM CREEK Pennsylvania Poor 1937 89 5,300
2027 CSX LOCAL & YOUGH R Pennsylvania Fair 1937 89 14,996
S JEFFERSON / BIKE TRAIL Pennsylvania Fair 1937 89 11,831
TRIB TO BUFFALO CREEK Pennsylvania Fair 1937 89 1,147
N BR BRADYS RUN Pennsylvania Poor 1937 89 536
BAREFOOT RUN Pennsylvania Fair 1937 89 1,524
SCRUBGRASS CREEK Pennsylvania Fair 1937 89 737
RAYSTOWN BR JUNIATA RIV Pennsylvania Fair 1937 89 218
JOHNS BR RAYSTWN BR JUN Pennsylvania Fair 1937 89 399
RAYSTOWN BR.JUNIATA RIV. Pennsylvania Fair 1937 89 82
RAYSTOWN BR.JUNIATA RIV. Pennsylvania Fair 1937 89 4,386
CLEAR CREEK Pennsylvania Poor 1937 89 122
TR.LITTLE WILLS CREEK Pennsylvania Good 1937 89 121
EVITTS CREEK Pennsylvania Fair 1937 89 410
COVE RUN Pennsylvania Fair 1937 89 142
COVE RUN Pennsylvania Fair 1937 89 100

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.