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 |
|---|---|---|---|---|---|
| CLEAR FORK | Ohio | Fair | 1900 | 126 | 209 |
| LITTLE MUSKINGUM RIVER | Ohio | Poor | 1900 | 126 | 96 |
| LITTLE MUSKINGUM RIVER | Ohio | Fair | 1900 | 126 | 96 |
| TRAIL RUN | Ohio | Fair | 1900 | 126 | 96 |
| LITTLE MUSKINGUM RIVER | Ohio | Poor | 1900 | 126 | 209 |
| MILLER RUN | Ohio | Fair | 1900 | 126 | 96 |
| MILLER RUN | Ohio | Poor | 1900 | 126 | 2 |
| NARROWS RUN | Ohio | Poor | 1900 | 126 | 4 |
| STREAM | Ohio | Fair | 1900 | 126 | 155 |
| STREAM | Ohio | Fair | 1900 | 126 | 96 |
| STREAM | Ohio | Poor | 1900 | 126 | 5 |
| Twin Creek | Ohio | Fair | 1900 | 126 | 63 |
| Spring Run | Ohio | Fair | 1900 | 126 | 225 |
| Poplar Run | Ohio | Poor | 1900 | 126 | 120 |
| SPRING RUN | Ohio | Fair | 1900 | 126 | 207 |
| ditch | Ohio | Good | 1900 | 126 | 9,621 |
| STREAM | Ohio | Good | 1900 | 126 | 373 |
| LITTLE WOLF CREEK | Ohio | Fair | 1900 | 126 | 209 |
| MILL CREEK | Ohio | Good | 1900 | 126 | 175 |
| CLOSED | Ohio | Poor | 1900 | 126 | 150 |
| BIG WALNUT CREEK | Ohio | Good | 1900 | 126 | 66 |
| N.BRANCH KOKOSING | Ohio | Fair | 1900 | 126 | 161 |
| SHAW CREEK | Ohio | Poor | 1900 | 126 | 58 |
| CEDAR FORK CREEK | Ohio | Fair | 1900 | 126 | 92 |
| S.BRANCH KOKOSING | Ohio | Fair | 1900 | 126 | 105 |
| S.BRANCH KOKOSING | Ohio | Good | 1900 | 126 | 105 |
| CLOSED | Ohio | Poor | 1900 | 126 | 250 |
| KOKOSING RIVER | Ohio | Fair | 1900 | 126 | 209 |
| TRIB. OF KOKOSING | Ohio | Fair | 1900 | 126 | 530 |
| N.BRANCH KOKOSING | Ohio | Fair | 1900 | 126 | 72 |
| TRIB. OF FLAT RUN | Ohio | Poor | 1900 | 126 | 90 |
| COLLINS FORK | Ohio | Fair | 1900 | 126 | 209 |
| MEIGS CREEK | Ohio | Good | 1900 | 126 | 324 |
| MANNS FORK SALT CREEK | Ohio | Good | 1900 | 126 | 328 |
| DRY RIFFLE RUN TRIB | Ohio | Good | 1900 | 126 | 209 |
| MANNS FORK SALT CREEK | Ohio | Fair | 1900 | 126 | 137 |
| KENT RUN TRIB | Ohio | Fair | 1900 | 126 | 140 |
| KENT RUN | Ohio | Fair | 1900 | 126 | 209 |
| BUFFALO FORK | Ohio | Fair | 1900 | 126 | 209 |
| LITTLE DUNCAN RUN | Ohio | Good | 1900 | 126 | 351 |
| BRUSH CREEK TRIB | Ohio | Fair | 1900 | 126 | 928 |
| BRUSH CREEK | Ohio | Good | 1900 | 126 | 209 |
| SALT RUN | Ohio | Good | 1900 | 126 | 375 |
| MOXAHALA CREEK | Ohio | Good | 1900 | 126 | 514 |
| KENT RUN | Ohio | Poor | 1900 | 126 | 240 |
| SHAWNEE RUN | Ohio | Fair | 1900 | 126 | 553 |
| THOMPSON RUN | Ohio | Fair | 1900 | 126 | 300 |
| THOMPSON RUN | Ohio | Good | 1900 | 126 | 351 |
| KENT RUN | Ohio | Good | 1900 | 126 | 209 |
| TIMBER RUN | Ohio | Good | 1900 | 126 | 2,073 |
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.