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
DRAKES BROOK New Jersey Fair 1900 126 113
PASSAIC RIVER New Jersey Fair 1900 126 11,766
PASSAIC RIVER New Jersey Good 1900 126 11,913
MOLLY ANNS BROOK New Jersey Fair 1900 126 68,292
PECKMAN RIVER New Jersey Fair 1900 126 9,032
POST BROOK New Jersey Fair 1900 126 8,061
GAEDE BROOK New Jersey Fair 1900 126 1,140
CUCKELS BROOK New Jersey Poor 1900 126 520
INDIAN GROVE BROOK New Jersey Fair 1900 126 2,304
PAULINS KILL New Jersey Fair 1900 126 2,799
PAULINS KILL New Jersey Fair 1900 126 2,799
WALLKILL RIVER New Jersey Good 1900 126 1,791
WEST BR.PAPAKATING CREEK New Jersey Fair 1900 126 2,274
CLOVE BROOK New Jersey Fair 1900 126 1,255
GREEN BROOK New Jersey Fair 1900 126 4,167
ROBINSON BRANCH RAH RIV New Jersey Poor 1900 126 16,566
RAHWAY RIVER New Jersey Fair 1900 126 8,335
POPHANDUSING CREEK New Jersey Fair 1900 126 65
BLAIR CREEK New Jersey Fair 1900 126 1,540
MERRILLS CREEK New Jersey Fair 1900 126 3,671
PAULINS KILL New Jersey Fair 1900 126 194
MUSCONETCONG RIVER New Jersey Good 1900 126 562
POHATCONG CREEK New Jersey Good 1900 126 209
POHATCONG CREEK New Jersey Good 1900 126 1,051
PEQUEST RIVER New Jersey Fair 1900 126 6,497
TRIB POPHANDUSING CREEK New Jersey Fair 1900 126 4,978
MUSCONETCONG RIVER New Jersey Fair 1900 126 108
CEDAR CREEK New Jersey Fair 1900 126 9
BIG FLAT BROOK New Jersey Fair 1900 126 64
BIG FLAT BROOK New Jersey Fair 1900 126 31
BIG FLAT BROOK New Jersey Fair 1900 126 56
DELAWARE RIVER New Jersey Fair 1900 126 4,629
ALLEN CREEK New York Fair 1900 126 101,500
Mill Pond Outlet New York Fair 1900 126 2,148
POESTEN KILL New York Poor 1900 126 2,267
KENYONTOWN CREEK New York Fair 1900 126 4
CAROGA CREEK New York Fair 1900 126 30
MILL CREEK New York Fair 1900 126 28
CANADA CREEK New York Poor 1900 126 111
WEST BR MOHAWK RIVER New York Poor 1900 126 1
SCONONDOA CREEK New York Poor 1900 126 19
STONY CREEK New York Fair 1900 126 93
MOHAWK RIVER New York Fair 1900 126 599
STERLING CREEK New York Poor 1900 126 1
ONONDAGA CREEK New York Fair 1900 126 4,104
ONONDAGA CREEK New York Fair 1900 126 562
ONONDAGA CREEK New York Fair 1900 126 9,567
SAGE CREEK New York Poor 1900 126 88
BRADNER CREEK New York Fair 1900 126 7
TB TWENTYMILE CRK New York Poor 1900 126 4

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.