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 |
|---|---|---|---|---|---|
| MACOUPIN CREEK | Illinois | Fair | 1900 | 126 | 25 |
| W FORK SHOAL CR | Illinois | Fair | 1900 | 126 | 25 |
| MACOUPIN CK | Illinois | Fair | 1900 | 126 | 50 |
| LAKE FORK SHOAL CR | Illinois | Fair | 1900 | 126 | 125 |
| FAWN CREEK | Illinois | Poor | 1900 | 126 | 25 |
| STREAM | Illinois | Poor | 1900 | 126 | 75 |
| SO BR HILLSBORO LK | Illinois | Fair | 1900 | 126 | 1,000 |
| STREAM | Illinois | Fair | 1900 | 126 | 25 |
| CREEK | Illinois | Fair | 1900 | 126 | 50 |
| STREAM | Illinois | Fair | 1900 | 126 | 25 |
| HURRICANE CR | Illinois | Poor | 1900 | 126 | 25 |
| CREEK | Illinois | Poor | 1900 | 126 | 150 |
| DRY FORK | Illinois | Fair | 1900 | 126 | 25 |
| HURRICANE CR | Illinois | Poor | 1900 | 126 | 25 |
| WILLOW CRK. | Illinois | Fair | 1900 | 126 | 150 |
| LICK CRK | Illinois | Fair | 1900 | 126 | 75 |
| MAUVAISE CRK | Illinois | Fair | 1900 | 126 | 150 |
| CREEK | Illinois | Poor | 1900 | 126 | 50 |
| B&N RR | Illinois | Poor | 1900 | 126 | 50 |
| BR OF MUD RUN | Illinois | Good | 1900 | 126 | 10 |
| BR.OF BIG HOLLOW CR | Illinois | Poor | 1900 | 126 | 25 |
| SIXMILE CREEK | Illinois | Poor | 1900 | 126 | 1,000 |
| DODDS BRANCH | Illinois | Fair | 1900 | 126 | 20 |
| GALUM CREEK | Illinois | Poor | 1900 | 126 | 50 |
| MUD CREEK | Illinois | Good | 1900 | 126 | 100 |
| LITTLE GALUM CREEK | Illinois | Fair | 1900 | 126 | 100 |
| GALUM CREEK | Illinois | Good | 1900 | 126 | 100 |
| TRIB TO BONNIE CREEK | Illinois | Good | 1900 | 126 | 100 |
| MOORES BRANCH | Illinois | Fair | 1900 | 126 | 50 |
| BOARD TREE BRANCH | Illinois | Good | 1900 | 126 | 100 |
| DRAINAGE DITCH | Illinois | Fair | 1900 | 126 | 50 |
| LAKE FORK | Illinois | Fair | 1900 | 126 | 50 |
| STREAM | Illinois | Good | 1900 | 126 | 150 |
| BUCK BRANCH | Illinois | Fair | 1900 | 126 | 75 |
| BUCK BRANCH | Illinois | Fair | 1900 | 126 | 75 |
| BUCK BRANCH | Illinois | Poor | 1900 | 126 | 50 |
| BROWN CREEK | Illinois | Fair | 1900 | 126 | 25 |
| HADLEY CR TRIBUTARY | Illinois | Fair | 1900 | 126 | 50 |
| HORTON CR TRIBUTARY | Illinois | Fair | 1900 | 126 | 25 |
| BOYD DITCH | Illinois | Fair | 1900 | 126 | 25 |
| HADLEY CR TRIBUTARY | Illinois | Poor | 1900 | 126 | 25 |
| CREEK | Illinois | Poor | 1900 | 126 | 10 |
| UNNAMED STREAM | Illinois | Poor | 1900 | 126 | 10 |
| ALL FORKS CREEK | Illinois | Good | 1900 | 126 | 350 |
| STREAM | Illinois | Fair | 1900 | 126 | 10 |
| STREAM | Illinois | Fair | 1900 | 126 | 25 |
| STREAM | Illinois | Fair | 1900 | 126 | 125 |
| FANCY CREEK | Illinois | Fair | 1900 | 126 | 175 |
| RICHLAND CREEK | Illinois | Fair | 1900 | 126 | 50 |
| LITTLE SPRING CREEK | Illinois | Good | 1900 | 126 | 1,050 |
Historic Bridges by State
States ranked by number of bridges built before 1951 still in service.
| State | Historic Bridges | Oldest Year | Avg 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.