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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
WATER KETTLE BROOK Massachusetts Poor 1880 146 22,200
WATER CANAL Massachusetts Fair 1880 146 8,453
WATER MILL RIVER Massachusetts Fair 1880 146 1,900
COMB ORANGE & MBTA/BMRR Massachusetts Fair 1880 146 23,000
WATER TOWN RIVER Massachusetts Fair 1880 146 1,164
WATER THE GULF Massachusetts Fair 1880 146 4,655
WATER MATFIELD RIVER Massachusetts Good 1880 146 32,328
WATER LOWER MILL POND Massachusetts Fair 1880 146 6,611
WATER FRENCH RIVER Massachusetts Fair 1880 146 15,646
WATER STONY BROOK Massachusetts Fair 1880 146 600
BLOODS BROOK New Hampshire Fair 1880 146 137
S BRANCH RARITAN RIVER New Jersey Good 1880 146 2,496
PAULINS KILL New Jersey Fair 1880 146 1,433
INDIAN RIVER New York Good 1880 146 601
BURRELL CREEK New York Fair 1880 146 1,311
CINCINNATI CREEK New York Fair 1880 146 91
OWASCO OUTLET New York Fair 1880 146 7,089
ONONDAGA CREEK New York Fair 1880 146 1,209
KEUKA LAKE OUTLET PEDES New York Good 1880 146 4,826
DUNDERBERG CREEK New York Poor 1880 146 174
SANGERFIELD RIVER New York Fair 1880 146 10
GRASSE RIVER New York Good 1880 146 711
CONRAIL PENN CENTRAL R-R Ohio Fair 1880 146 324
CROSS CREEK Ohio Fair 1880 146 951
PRINCESS CREEK Pennsylvania Poor 1880 146 750
OCTORARO CREEK Pennsylvania Fair 1880 146 466
E OCTORARO CREEK Pennsylvania Poor 1880 146 150
PERKIOMEN CREEK Pennsylvania Fair 1880 146 784
Shermans Creek Pennsylvania Good 1880 146 139
MIDDLE BR. SUGAR CREEK Pennsylvania Poor 1880 146 100
COLD RIVER Vermont Fair 1880 146 200
MAEYSTOWN CREEK Illinois Fair 1881 145 1,550
WATER MUDDY RIVER Massachusetts Fair 1881 145 51,600
REEDERS ALLEY 001 Montana Fair 1881 145 100
MUD RUN Pennsylvania Good 1881 145 10
LITTLE FISHING CREEK Pennsylvania Fair 1881 145 50
CHILLISQUAQUE CREEK Pennsylvania Poor 1881 145 100
STONYCREEK RIVER Pennsylvania Fair 1881 145 50
MINGO CREEK Pennsylvania Fair 1881 145 300
SO. WHEELOCK BRANCH Vermont Poor 1881 145 400
LULLS BROOK Vermont Poor 1881 145 100
SANTO DOMINGO CREEK Puerto Rico Fair 1881 145 18,600
DES MOINES ST Iowa Fair 1882 144 565
NORTH RACCOON RIVER Iowa Poor 1882 144 153
DD 81 Iowa Fair 1882 144 46
OWENS CREEK Maryland Fair 1882 144 360
RR AMTRAK/MBTA Massachusetts Fair 1882 144 6,518
WATER DEERFIELD RIVER Massachusetts Poor 1882 144 650
RR PARR Massachusetts Poor 1882 144 27,000
BLACKWATER RIVER New Hampshire Poor 1882 144 96

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