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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
TAYLOR CREEK Ohio Fair 1910 116 324
WOLF CREEK Ohio Fair 1910 116 351
QUEER CREEK Ohio Good 1910 116 96
TOWN FORK Ohio Fair 1910 116 31
TRIB OF MOHICAN RIVER Ohio Fair 1910 116 100
MCCOYS DITCH Ohio Good 1910 116 438
UNNAMED CREEK Ohio Good 1910 116 262
BAUGHMAN DITCH Ohio Good 1910 116 504
HARLEM DITCH Ohio Fair 1910 116 64
BLACK RIVER PARSONS RD. Ohio Good 1910 116 3,233
WB BLACK RIV W BRIDGE ST Ohio Fair 1910 116 4,731
PAINT CREEK Ohio Poor 1910 116 242
OVER CHERRY VALLEY RUN Ohio Good 1910 116 324
BEARS DEN CREEK Ohio Fair 1910 116 6,440
BIG RUN Ohio Good 1910 116 213
SUNFISH CREEK Ohio Poor 1910 116 209
SHAW CREEK Ohio Fair 1910 116 948
BULL RUN Ohio Fair 1910 116 470
MILNERS FORK Ohio Poor 1910 116 2,340
NORFOLK-SOUTHERN RXR Ohio Poor 1910 116 324
TOUBYS RUN Ohio Fair 1910 116 2,493
RITTERS RUN Ohio Fair 1910 116 100
LICK RUN Ohio Fair 1910 116 2,231
LITTLE STILLWATER CREEK Ohio Fair 1910 116 1,221
TRIB L. MIAMI R (CLOSED) Ohio Poor 1910 116 336
FIFTEENMILE CK * HELDMA Ohio Fair 1910 116 140
MOSS RUN Ohio Poor 1910 116 96
ROCKY FORD N.BALTIMORE R Ohio Fair 1910 116 4,483
RADER DITCH HOYTVILLE RD Ohio Poor 1910 116 50
DITCH 2311 TULLER ROAD Ohio Fair 1910 116 75
TONTOGANY CREEK AND ROAD Ohio Fair 1910 116 106
DITCH 2315 POE RD Ohio Poor 1910 116 874
SOLDIER CREEK Oklahoma Poor 1910 116 25
BUTLER CREEK Oklahoma Poor 1910 116 50
NINE MILE BEAVER CREEK Oklahoma Poor 1910 116 25
RED ROCK CREEK Oklahoma Poor 1910 116 24
WOLF CREEK Oklahoma Poor 1910 116 25
LONG BRANCH CREEK Oklahoma Fair 1910 116 24
PRYOR CREEK Oklahoma Poor 1910 116 75
LOST CREEK Oklahoma Poor 1910 116 100
WILLAMETTE RIVER Oregon Fair 1910 116 32,243
WILLAMETTE RIVER Oregon Poor 1910 116 11,732
STEEL BR. E. APPR. Oregon Fair 1910 116 11,732
B-25 X BANFIELD AND UPRR Oregon Fair 1910 116 15,347
BERMUDIAN CREEK Pennsylvania Fair 1910 116 124
SAW MILL RUN Pennsylvania Fair 1910 116 14,731
LITTLE DEER CREEK Pennsylvania Fair 1910 116 41
DIRTY CAMP RUN Pennsylvania Poor 1910 116 100
BUFFALO & PITTSBURG RR Pennsylvania Poor 1910 116 45
PINE RUN Pennsylvania Fair 1910 116 50

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.

All Bridges Poor Condition Scour Critical Bridge Stats