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
ELK CREEK Pennsylvania Fair 1837 189 205
LITTLE NESHAMINY CREEK Pennsylvania Good 1838 188 8,870
DUNLAP CREEK Pennsylvania Poor 1839 187 6,661
HOKENDAUQUA CREEK Pennsylvania Good 1839 187 75
OVER CONNEAUT CK W BR Pennsylvania Poor 1840 186 219
LITTLE SEWICKLEY CREEK Pennsylvania Fair 1841 185 3,571
ONTELAUNEE CREEK Pennsylvania Fair 1841 185 222
JORDAN CREEK Pennsylvania Fair 1841 185 100
WISSAHICKON CREEK Pennsylvania Fair 1841 185 6,457
ROCK CREEK 3370E08 Pennsylvania Fair 1841 185 10,769
E BRANCH PERKIOMEN CREEK Pennsylvania Fair 1841 185 2,130
MINISTER CREEK Pennsylvania Fair 1844 182 14,811
POQUESSING CREEK Pennsylvania Poor 1845 181 100
CONESTOGA RIVER Pennsylvania Poor 1846 180 414
FRENCH CREEK Pennsylvania Good 1847 179 6,616
FISHING CREEK Pennsylvania Good 1847 179 375
W BR OCTORARO CRK Pennsylvania Fair 1847 179 340
DELAWARE RIVER Pennsylvania Fair 1848 178 270
COCALICO CREEK Pennsylvania Fair 1849 177 310
Conococheague Creek Pennsylvania Good 1849 177 5
FRENCH CREEK Pennsylvania Fair 1850 176 660
CHESTER CREEK / 3696-C10 Pennsylvania Fair 1850 176 5,295
SHAWNEE RUN Pennsylvania Fair 1850 176 1,030
BRANCH NESHAMINY CREEK Pennsylvania Fair 1850 176 8,784
LOYALSOCK CREEK Pennsylvania Poor 1850 176 113
SEWICKLEY CREEK Pennsylvania Fair 1850 176 1,100
CATAWISSA CREEK Pennsylvania Fair 1851 175 300
MANATAWNY CREEK Pennsylvania Good 1852 174 1,654
SWAMP CREEK / 2585-J10 Pennsylvania Fair 1852 174 595
S BRANCH OF ROARING CR Pennsylvania Poor 1852 174 150
BROWNS CREEK Pennsylvania Fair 1853 173 50
POQUESSING CREEK Pennsylvania Poor 1853 173 200
CHILLISQUAQUE CREEK Pennsylvania Fair 1853 173 25
Poquessing Creek Pennsylvania Poor 1853 173 100
PAUNNACUSSING CREEK Pennsylvania Fair 1854 172 2,246
HAYCOCK CREEK Pennsylvania Poor 1854 172 265
YELLOW BREECHES CREEK Pennsylvania Poor 1854 172 1,158
WEST SWAMP CREEK Pennsylvania Fair 1854 172 1,682
STONY CREEK Pennsylvania Good 1854 172 15,000
CHIQUES CREEK Pennsylvania Fair 1855 171 275
TOWAMENCIN CREEK Pennsylvania Fair 1855 171 11,616
PENNS CREEK Pennsylvania Poor 1855 171 10
BRADY RUN (S BRANCH) Pennsylvania Fair 1856 170 55
PENN CANAL Pennsylvania Fair 1856 170 50
FRENCH CREEK Pennsylvania Poor 1856 170 2,994
FRYS RUN Pennsylvania Fair 1857 169 831
JORDAN CREEK Pennsylvania Fair 1858 168 100
JORDAN CREEK Pennsylvania Poor 1858 168 200
HARTENSTINE CREEK Pennsylvania Fair 1858 168 1,860
CONRAIL Pennsylvania Fair 1858 168 39,702

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.