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 |
|---|---|---|---|---|---|
| CONOTTON CREEK | Ohio | Fair | 1900 | 126 | 30 |
| LITTLE STILLWATER CREEK | Ohio | Fair | 1900 | 126 | 351 |
| STILLWATER CREEK | Ohio | Fair | 1900 | 126 | 112 |
| CONOTTON CREEK | Ohio | Fair | 1900 | 126 | 60 |
| CONOTTON CREEK | Ohio | Poor | 1900 | 126 | 200 |
| NORTH FORK SHORT CREEK | Ohio | Poor | 1900 | 126 | 255 |
| LIMING CREEK | Ohio | Poor | 1900 | 126 | 40 |
| PLUM RUN | Ohio | Fair | 1900 | 126 | 540 |
| STILLWATER CREEK | Ohio | Poor | 1900 | 126 | 540 |
| SOUTH FORK | Ohio | Fair | 1900 | 126 | 40 |
| CONOTTON CREEK | Ohio | Fair | 1900 | 126 | 136 |
| CONOTTON CREEK | Ohio | Fair | 1900 | 126 | 50 |
| CONOTTON CREEK | Ohio | Poor | 1900 | 126 | 291 |
| LAUREL CREEK | Ohio | Poor | 1900 | 126 | 20 |
| CONNOTTON CREEK | Ohio | Fair | 1900 | 126 | 291 |
| SKULL FORK | Ohio | Fair | 1900 | 126 | 50 |
| 1157 N TURKEY FOOT(CLOSE | Ohio | Poor | 1900 | 126 | 10 |
| OBERHAUS CREEK | Ohio | Poor | 1900 | 126 | — |
| SCOTT CREEK | Ohio | Good | 1900 | 126 | 161 |
| CLEAR CREEK | Ohio | Good | 1900 | 126 | 97 |
| PINE CREEK | Ohio | Good | 1900 | 126 | 48 |
| MONDAY CREEK | Ohio | Fair | 1900 | 126 | 162 |
| TRIBUTARY OF PAINT CREEK | Ohio | Good | 1900 | 126 | 96 |
| CRAB RUN | Ohio | Good | 1900 | 126 | 209 |
| OVER W&LE RR(ABANDONED) | Ohio | Fair | 1900 | 126 | 3,839 |
| SNYDER / W BR HURON RVR | Ohio | Good | 1900 | 126 | 200 |
| GREENFIELD S L/SLATE RUN | Ohio | Fair | 1900 | 126 | 271 |
| CO LINE 10 / MUD RUN | Ohio | Fair | 1900 | 126 | 211 |
| DICKASON RUN | Ohio | Fair | 1900 | 126 | 683 |
| LITTLE RACOON CR | Ohio | Fair | 1900 | 126 | 683 |
| TRIB TO SYMMES CR | Ohio | Fair | 1900 | 126 | 349 |
| PIGEON CREEK | Ohio | Good | 1900 | 126 | 193 |
| SYMMES CREEK | Ohio | Fair | 1900 | 126 | 100 |
| TRIB TO DICKASON RUN | Ohio | Fair | 1900 | 126 | 324 |
| DICKASON RUN | Ohio | Poor | 1900 | 126 | 351 |
| BUCKEYE CREEK | Ohio | Poor | 1900 | 126 | 451 |
| LONG RUN | Ohio | Fair | 1900 | 126 | 146 |
| PINEY FORK | Ohio | Poor | 1900 | 126 | 797 |
| CROSS CREEK | Ohio | Good | 1900 | 126 | 759 |
| CROSS CREEK | Ohio | Fair | 1900 | 126 | 206 |
| ISLAND CREEK | Ohio | Fair | 1900 | 126 | 209 |
| CEDAR LICK CREEK | Ohio | Good | 1900 | 126 | 385 |
| SALEM CREEK | Ohio | Fair | 1900 | 126 | 122 |
| PINEY FORK | Ohio | Poor | 1900 | 126 | 10 |
| PINEY FORK | Ohio | Fair | 1900 | 126 | 209 |
| CROSS CREEK | Ohio | Fair | 1900 | 126 | 209 |
| RUSH RUN | Ohio | Good | 1900 | 126 | 81 |
| CONRAIL&IND ACCESS RD | Ohio | Fair | 1900 | 126 | 2,829 |
| NORTH BRANCH KOKOSING RI | Ohio | Fair | 1900 | 126 | 873 |
| MARKLEY RUN | Ohio | Good | 1900 | 126 | 644 |
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.