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 Poor 1917 109 500
QUEMAHONING CREEK Pennsylvania Poor 1917 109 350
LAUREL RUN Pennsylvania Fair 1917 109 70
TENMILE CREEK Pennsylvania Fair 1917 109 750
DOGWOOD RUN Pennsylvania Fair 1917 109 6,455
HARTMAN RUN Pennsylvania Fair 1917 109 1,185
STONY RUN Pennsylvania Fair 1917 109 455
BEAVER CREEK Pennsylvania Fair 1917 109 523
SEPTA(WEST CHESTER BR.) Pennsylvania Poor 1917 109 8,755
SEPTA (Chestnut Hill W.) Pennsylvania Fair 1917 109 6,600
CONRAIL B&O RR BELT LINE Pennsylvania Fair 1917 109 23,000
GLADE RUN Pennsylvania Fair 1918 108 1,607
COWANSHANNOCK CREEK Pennsylvania Fair 1918 108 31
NORFOLK SOUTHERN RR Pennsylvania Poor 1918 108 2,351
LITTLE CONEMAUGH RIVER Pennsylvania Good 1918 108 5,552
ELK CREEK Pennsylvania Fair 1918 108 109
FOX RUN Pennsylvania Poor 1918 108 103
GAP RUN Pennsylvania Fair 1918 108 6,934
IRISH HOLLOW Pennsylvania Fair 1918 108 2,074
WEST BR OF BRANDYWINE CR Pennsylvania Poor 1918 108 833
VALLEY CREEK Pennsylvania Poor 1918 108 1,492
MUDDY RUN Pennsylvania Fair 1918 108 170
TWO MILE RUN Pennsylvania Good 1918 108 203
LITTLE GREEN CREEK Pennsylvania Poor 1918 108 50
YELLOW BREECHES CREEK Pennsylvania Poor 1918 108 74
SEPTA (P&W) Pennsylvania Fair 1918 108 2,451
AMTRAK (MAIN LINE) Pennsylvania Poor 1918 108
COAL LICK RUN Pennsylvania Poor 1918 108 3,372
MILL RUN Pennsylvania Fair 1918 108 100
GEORGES CREEK Pennsylvania Poor 1918 108 25
FALLING SPRING CREEK Pennsylvania Poor 1918 108 3,535
BRANCH OF BLOCKHOUSE RUN Pennsylvania Fair 1918 108 186
TENMILE CREEK Pennsylvania Poor 1918 108 15
ROSS RUN Pennsylvania Fair 1918 108 50
UNNAMED STREAM Pennsylvania Fair 1918 108 100
ECKLES RUN Pennsylvania Fair 1918 108 1,000
NORFOLK SO. (LINE 0312) Pennsylvania Fair 1918 108 2,309
POHOPOCO CREEK Pennsylvania Fair 1918 108 3,709
POHOPOCO CREEK Pennsylvania Fair 1918 108 3,709
SCHUYKILL RIVER NSRC Pennsylvania Fair 1918 108 34,456
RIDGE VALLEY CREEK Pennsylvania Poor 1918 108 44
OVER MILLERS RUN Pennsylvania Fair 1918 108 317
TRIB SHERMANS CREEK Pennsylvania Poor 1918 108 705
SHERMAN CREEK Pennsylvania Fair 1918 108 50
LOYALHANNA CREEK Pennsylvania Good 1918 108 11,638
BERMUDIAN CREEK Pennsylvania Poor 1918 108 318
PENNYPACK CREEK Pennsylvania Fair 1918 108 17,735
CONRAIL;RICHMOND BRANCH Pennsylvania Poor 1918 108 9,891
AMTRAK MAIN LINE N-S Pennsylvania Poor 1918 108 9,941
CSX TRANSPORTATION Pennsylvania Poor 1918 108 100

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.