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Historic Bridges

94,381 bridges built before 1951 across the United States still in service today.

Bridges Built Before 1951

The United States has 94,381 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
N BRANCH RANCOCAS CREEK New Jersey Poor 1853 173 888
W.BR.CAYUGA INLET New York Fair 1853 173 186
WEST CANADA CREEK New York Fair 1853 173 1,588
ABANDONED CONRAIL RR Ohio Poor 1853 173 250
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
OTTER CREEK Vermont Fair 1853 173 1,400
BOND BROOK Maine Poor 1854 172 8,861
W BR WARNER RIVER New Hampshire Good 1854 172 96
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
WEPAWAUG RIVER Connecticut Fair 1855 171 34,600
WATER BEAVER BK EAST STR Massachusetts Fair 1855 171 17,123
WATER BEAVER BK WEST STR Massachusetts Fair 1855 171 17,123
CHERRY FORK Ohio Fair 1855 171 566
INDIAN CAMP RUN Ohio Fair 1855 171 324
CHIQUES CREEK Pennsylvania Fair 1855 171 275
TOWAMENCIN CREEK Pennsylvania Fair 1855 171 11,616
PENNS CREEK Pennsylvania Poor 1855 171 10
BRANCH RIVER Rhode Island Fair 1855 171 5,430
FRAILES CREEK Puerto Rico Poor 1855 171 9,900
Little RACCOON Creek Indiana Poor 1856 170 62
Little RACCOON Creek Indiana Poor 1856 170 132
OWENS CREEK Maryland Good 1856 170 1,170
SANDY CREEK New York Fair 1856 170 4,003
BRADY RUN (S BRANCH) Pennsylvania Fair 1856 170 55
PENN CANAL Pennsylvania Fair 1856 170 50
FRENCH CREEK Pennsylvania Poor 1856 170 2,994
HOOFS RUN Virginia Fair 1856 170 2,000
BUCKHANNON RIVER West Virginia Fair 1856 170 250
CA¥AS RIVER Puerto Rico Fair 1856 170 1,400
OLD COURSE OF SACO RIVER Maine Fair 1857 169 50
E BR DELAWARE RIVER New York Poor 1857 169 118
BRANCH CHAGRIN RIVER Ohio Poor 1857 169 7,070
FRYS RUN Pennsylvania Fair 1857 169 831
LITTLE ANTIETAM CREEK Maryland Fair 1858 168 1,173
WATER CONCORD RIVER Massachusetts Fair 1858 168 13,000
SWIFT RIVER New Hampshire Good 1858 168 292
BATTEN KILL New York Fair 1858 168 121
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
BLACKSTONE RIVER Rhode Island Fair 1858 168 16,040
ASHUELOT RIVER New Hampshire Good 1859 167 4,250

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
Virgin Islands 5 1904 112 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