Historic Bridges

94,376 bridges built before 1951 across the United States still in service today.

Bridges Built Before 1951

The United States has 94,376 bridges 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.

Bridge State Condition Year Built Age (Years) ADT
RED SLOUGH DITCH Ohio Good 1902 124 210
QUARRY LAKE QUARRY RD Ohio Fair 1902 124 748
LITTLE WALNUT CREEK Ohio Fair 1902 124 912
THORN RUN Ohio Good 1902 124 258
PINEY FORK Pennsylvania Fair 1902 124 803
CAMPBELLS RUN Pennsylvania Fair 1902 124 2,938
RAYSTOWN BR.JUNIATA RIV. Pennsylvania Good 1902 124 168
TULPEHOCKEN CREEK Pennsylvania Poor 1902 124 280
WYALUSING CREEK Pennsylvania Poor 1902 124 250
MORRIS RUN Pennsylvania Good 1902 124 7,314
MORRIS RUN Pennsylvania Fair 1902 124 544
NORTH BR NESHAMINY CREEK Pennsylvania Poor 1902 124 50
RAPP CREEK Pennsylvania Fair 1902 124 400
CONNOQUENESSING CREEK Pennsylvania Poor 1902 124 250
BRANDYWINE CREEK Pennsylvania Fair 1902 124 7,797
CANOE CREEK Pennsylvania Poor 1902 124 50
RJ CORMAN RR Pennsylvania Poor 1902 124
SOUTH BRANCH ROARING CR Pennsylvania Poor 1902 124 200
OVER MILL RUN Pennsylvania Poor 1902 124 1,500
TEN MILE CREEK Pennsylvania Poor 1902 124 15
BROADHEAD RUN Pennsylvania Poor 1902 124 204
W BR TUNUNGWANT CREEK Pennsylvania Good 1902 124 1,300
AMTRAK PHIL-HBG. Pennsylvania Poor 1902 124 500
PINE CREEK Pennsylvania Fair 1902 124 35
PANTHER CREEK Pennsylvania Poor 1902 124 6,528
OVEN RUN Pennsylvania Poor 1902 124 50
BUFFALO CREEK Pennsylvania Good 1902 124 100
KINGS CREEK TRIB. Pennsylvania Good 1902 124 30
CSX RAILROAD Pennsylvania Fair 1902 124 9,341
SEPTA (BETH BR) Pennsylvania Fair 1902 124 1,200
Dickerson Run Pennsylvania Poor 1902 124 50
PASCOAG RIVER Rhode Island Poor 1902 124 8,750
CENTENARY CREEK Tennessee Fair 1902 124 80
1ST BRANCH WHITE R. Vermont Fair 1902 124 50
WINOOSKI RIVER Vermont Fair 1902 124 4,200
MILL CREEK Washington Fair 1902 124 4,412
RT FORK WEST FORK RIVER West Virginia Fair 1902 124 50
CASEI RIVER Puerto Rico Fair 1902 124 5,200
TOYO CREEK Puerto Rico Fair 1902 124 1,800
DEEP RAVINE NO 2 California Poor 1903 123 50
YORK CREEK California Fair 1903 123 1,500
STANISLAUS RIVER California Fair 1903 123 53,500
WEST UNION CREEK California Fair 1903 123 6,600
CORDILLERAS CREEK California Fair 1903 123 5,000
BESSEMER DITCH Colorado Fair 1903 123 992
METRO NORTH RAILROAD Connecticut Good 1903 123 7,600
N BR CHICAGO RIV CAN Illinois Fair 1903 123 13,400
S.BR.CHICAGO RIVER Illinois Poor 1903 123 6,100
WHITE RIVER Indiana Fair 1903 123 228
POGUES RUN Indiana Good 1903 123 1,649

Historic Bridges by State

States ranked by number of bridges built before 1951 still in service.

StateHistoric BridgesOldest YearAvg Age
Texas 8,191 1900 89 yrs
Pennsylvania 6,062 1697 99 yrs
Kansas 5,656 1870 93 yrs
Oklahoma 5,554 1900 89 yrs
Missouri 4,522 1874 96 yrs
California 4,414 1860 91 yrs
New York 3,831 1800 96 yrs
Ohio 3,386 1828 101 yrs
Nebraska 3,270 1888 91 yrs
Illinois 3,065 1863 99 yrs
Iowa 3,036 1876 98 yrs
Tennessee 2,857 1841 89 yrs
Alabama 2,703 1800 90 yrs
Indiana 2,682 1838 98 yrs
Virginia 2,504 1820 92 yrs
Kentucky 2,241 1835 89 yrs
Arkansas 1,932 1860 89 yrs
Georgia 1,832 1872 88 yrs
New Jersey 1,814 1792 99 yrs
Michigan 1,528 1867 94 yrs
Massachusetts 1,481 1764 107 yrs
Wisconsin 1,333 1887 92 yrs
South Carolina 1,282 1910 89 yrs
West Virginia 1,245 1817 96 yrs
North Carolina 1,203 1900 89 yrs
Arizona 1,189 1900 90 yrs
Washington 1,188 1900 92 yrs
South Dakota 1,118 1900 92 yrs
Minnesota 1,035 1884 94 yrs
Vermont 987 1824 99 yrs
Maryland 968 1809 99 yrs
Mississippi 908 1900 87 yrs
Connecticut 860 1832 96 yrs
Colorado 857 1887 89 yrs
Oregon 790 1899 92 yrs
New Mexico 719 1908 87 yrs
New Hampshire 716 1832 97 yrs
Florida 707 1900 87 yrs
North Dakota 685 1885 91 yrs
Montana 662 1881 90 yrs
Maine 630 1854 92 yrs
Louisiana 614 1908 87 yrs
Puerto Rico 463 1842 95 yrs
Hawaii 386 1900 95 yrs
Idaho 354 1908 90 yrs
Utah 217 1905 88 yrs
Wyoming 191 1908 88 yrs
Rhode Island 179 1810 107 yrs
Delaware 122 1839 99 yrs
Nevada 89 1900 89 yrs
District of Columbia 81 1831 94 yrs
Alaska 37 1910 86 yrs

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.