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
PA TPK (I-76) Pennsylvania Fair 1950 76 3,856
PA TPK (I-76) Pennsylvania Fair 1950 76 2,304
PA TPK (I-76) Pennsylvania Fair 1950 76 6,088
PA TPK (I-76) Pennsylvania Fair 1950 76 993
MIDDLE CREEK Pennsylvania Poor 1950 76 25
DONEGAL CREEK Pennsylvania Poor 1950 76 700
CONOWINGO CREEK Pennsylvania Poor 1950 76 155
HAMMER CREEK Pennsylvania Fair 1950 76 100
LITTLE CHIQUES CRK Pennsylvania Fair 1950 76 200
TRIB BIG BEAVER CRK Pennsylvania Fair 1950 76 605
HUBER RUN Pennsylvania Fair 1950 76 490
LITTLE COCALICO CREEK Pennsylvania Poor 1950 76 105
COCALICO CREEK Pennsylvania Good 1950 76 50
COCALICO CREEK Pennsylvania Poor 1950 76 1,800
CONOY CREEK Pennsylvania Fair 1950 76 1,030
CONOY CREEK Pennsylvania Fair 1950 76 1,550
SLIPPERY ROCK CREEK Pennsylvania Fair 1950 76 12,832
NESHANNOCK CREEK Pennsylvania Fair 1950 76 5,366
BIG RUN Pennsylvania Fair 1950 76 7,438
WILLOW BROOK Pennsylvania Fair 1950 76 7,438
HOTTENBAUGH RUN Pennsylvania Good 1950 76 50
MAHONING RIVER TRIB Pennsylvania Poor 1950 76 1,000
CAMP RUN Pennsylvania Poor 1950 76 100
GINGRICH RUN Pennsylvania Fair 1950 76 13,780
PA TPK (I-76) Pennsylvania Fair 1950 76 3,141
LITTLE LEHIGH CREEK Pennsylvania Fair 1950 76 1,201
LITTLE LEHIGH CREEK Pennsylvania Poor 1950 76 750
SWITZER CREEK Pennsylvania Fair 1950 76 100
CATASAUQUA CREEK Pennsylvania Poor 1950 76 500
CATASAUQUA CREEK Pennsylvania Fair 1950 76 1,000
SOLOMON CREEK Pennsylvania Fair 1950 76 3,600
LAKE JEAN OUTLET Pennsylvania Good 1950 76 600
OVER HAGERMANS RUN Pennsylvania Fair 1950 76 12,807
OVER MORGAN RUN Pennsylvania Fair 1950 76 5,026
OVER BIG RUN Pennsylvania Good 1950 76 3,178
MILL CREEK Pennsylvania Poor 1950 76 100
PLEASANT STREAM Pennsylvania Poor 1950 76 108
HALF MILE RUN Pennsylvania Poor 1950 76 40
S BR KNAPP CREEK Pennsylvania Poor 1950 76 10
LEWIS RUN Pennsylvania Poor 1950 76 200
E BR TUNUNGWANT CREEK Pennsylvania Fair 1950 76 400
BOBBY RUN Pennsylvania Good 1950 76 7,590
SPRING RUN Pennsylvania Fair 1950 76 739
STONY RUN Pennsylvania Fair 1950 76 2,604
FOREST HILLS RUN Pennsylvania Good 1950 76 896
LONGSHORE CREEK Pennsylvania Poor 1950 76 974
STONY CREEK Pennsylvania Fair 1950 76 13,812
BRANCH STONY RUN Pennsylvania Fair 1950 76 13,812
ABRAMS RUN/CROW CREEK Pennsylvania Fair 1950 76 52,925
CROTON ROAD Pennsylvania Fair 1950 76 93,338

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.