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
MILL CREEK Pennsylvania Fair 1936 90 321
WELCH RUN Pennsylvania Fair 1936 90 528
LITTLE SANDY CREEK Pennsylvania Good 1936 90 177
CATHERS RUN Pennsylvania Poor 1936 90 50
STONEY RUN Pennsylvania Fair 1936 90 414
DOE RUN Pennsylvania Poor 1936 90 175
DELAWARE CREEK Pennsylvania Poor 1936 90 1,678
EAST LICKING CREEK Pennsylvania Poor 1936 90 50
SUMMIT LAKE CREEK Pennsylvania Fair 1936 90 22,983
LEGGETTS CREEK Pennsylvania Fair 1936 90 20,826
CHIQUES CREEK Pennsylvania Fair 1936 90 3,500
Norfolk Southern RR Pennsylvania Good 1936 90 7,968
CONEWAGO CREEK Pennsylvania Fair 1936 90 816
QUITTAPAHILLA CREEK Pennsylvania Fair 1936 90 3,924
SWATARA CREEK Pennsylvania Fair 1936 90 1,144
PRIVATE RD.& L.CEDAR CK. Pennsylvania Fair 1936 90 20,101
ABANDONED E & L RAILROAD Pennsylvania Fair 1936 90 511
MARSH CREEK Pennsylvania Good 1936 90 210
SOLOMON CREEK Pennsylvania Fair 1936 90 815
FALLS RUN Pennsylvania Fair 1936 90 70
PINE RUN Pennsylvania Poor 1936 90 227
WEST BRANCH RUN Pennsylvania Fair 1936 90 50
BOLIVAR RUN Pennsylvania Poor 1936 90 4,769
STRODES RUN Pennsylvania Fair 1936 90 250
PENNYPACK CREEK Pennsylvania Fair 1936 90 21,544
PENNYPACK TRAIL Pennsylvania Fair 1936 90 21,544
SEPTA Pennsylvania Fair 1936 90 25,373
NORFOLK SOUTHERN RR Pennsylvania Poor 1936 90 36,517
SEPTA (NEWTOWN BR); CSX Pennsylvania Fair 1936 90 15,733
MILL CREEK Pennsylvania Fair 1936 90 6,605
JENKINTOWN CREEK Pennsylvania Poor 1936 90 4,500
BRANCH MACOBY CREEK Pennsylvania Fair 1936 90 150
OVER MUD CREEK Pennsylvania Fair 1936 90 124
SAUCON CREEK Pennsylvania Poor 1936 90 -
FISHING CREEK Pennsylvania Poor 1936 90 17,646
VALLEY ST Pennsylvania Good 1936 90 17,646
HORNBECK CREEK Pennsylvania Poor 1936 90 1,227
MASTHOPE CREEK Pennsylvania Fair 1936 90 537
MIDDLE BR BUSHKILL CREEK Pennsylvania Fair 1936 90 20
MAHANNON CREEK Pennsylvania Good 1936 90 17,751
OVER SUSQUEHECKA CREEK Pennsylvania Fair 1936 90 384
ALLEN CREEK Pennsylvania Poor 1936 90 96
FALL CREEK Pennsylvania Poor 1936 90 50
FALL CREEK Pennsylvania Poor 1936 90 50
WELLS CREEK Pennsylvania Fair 1936 90 50
RHINEY CREEK Pennsylvania Good 1936 90 1,930
STARRUCCA CREEK Pennsylvania Fair 1936 90 502
OVER COWANESQUE RIVER Pennsylvania Fair 1936 90 3,839
OVER COWANESQUE RIVER Pennsylvania Fair 1936 90 1,177
OVER COWANESQUE RIVER Pennsylvania Fair 1936 90 716

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.