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 |
|---|---|---|---|---|---|
| LITTLE DANIELS RUN | Pennsylvania | Poor | 1910 | 116 | 1,745 |
| BURGETTS FORK | Pennsylvania | Poor | 1910 | 116 | 1,195 |
| BUFFALO CREEK | Pennsylvania | Good | 1910 | 116 | 40 |
| WHEELING CREEK TRIB | Pennsylvania | Fair | 1910 | 116 | 50 |
| HOLLISTER CREEK | Pennsylvania | Poor | 1910 | 116 | 40 |
| BEAVER DAM CREEK | Pennsylvania | Poor | 1910 | 116 | 10 |
| JONES CREEK | Pennsylvania | Fair | 1910 | 116 | 70 |
| MILL CREEK | Pennsylvania | Poor | 1910 | 116 | 50 |
| L.SEWICKLEY CK. | Pennsylvania | Good | 1910 | 116 | 100 |
| S BR CODORUS CREEK | Pennsylvania | Poor | 1910 | 116 | 1,760 |
| TYLERS RUN | Pennsylvania | Fair | 1910 | 116 | 6,707 |
| SO BRANCH CODORUS CREEK | Pennsylvania | Fair | 1910 | 116 | 141 |
| FISHING CREEK | Pennsylvania | Poor | 1910 | 116 | 624 |
| SEPTA(BALA STATION) | Pennsylvania | Poor | 1910 | 116 | 39,654 |
| CSX RAILROAD(MAIN LINE) | Pennsylvania | Fair | 1910 | 116 | 7,081 |
| SEPTA | Pennsylvania | Fair | 1910 | 116 | 4,200 |
| AMTRAK (NE Corridor) | Pennsylvania | Fair | 1910 | 116 | 4,000 |
| AMTRAK (Pittsburgh ML) | Pennsylvania | Good | 1910 | 116 | 8,000 |
| OVER SILL RUN | Pennsylvania | Fair | 1910 | 116 | 447 |
| OVER FRENCH CREEK S.BR. | Pennsylvania | Good | 1910 | 116 | 6,877 |
| Trib to Slippery Rock Cr | Pennsylvania | Fair | 1910 | 116 | 103 |
| BR. OF COBBS CREEK | Pennsylvania | Fair | 1910 | 116 | 5,000 |
| Fallen Timber Run | Pennsylvania | Poor | 1910 | 116 | 100 |
| STORM SEWER | Pennsylvania | Poor | 1910 | 116 | 8,374 |
| SANDY RUN | Pennsylvania | Fair | 1910 | 116 | 50 |
| KEYSER CREEK | Pennsylvania | Poor | 1910 | 116 | 100 |
| BLACKSTONE RIVER | Rhode Island | Fair | 1910 | 116 | 9,999 |
| BR OF CONGAREE RIVER | South Carolina | Fair | 1910 | 116 | 6,600 |
| ROCKY BRANCH | South Carolina | Fair | 1910 | 116 | 225 |
| TRIB TO REEDY RIVER | South Carolina | Fair | 1910 | 116 | 2,300 |
| REEDY RIVER | South Carolina | Good | 1910 | 116 | 5,200 |
| SNATCH CREEK | South Dakota | Poor | 1910 | 116 | 60 |
| MEDARY CK | South Dakota | Poor | 1910 | 116 | 92 |
| CK | South Dakota | Fair | 1910 | 116 | 62 |
| VERMILLION RV | South Dakota | Poor | 1910 | 116 | 40 |
| WILLOW CK | South Dakota | Poor | 1910 | 116 | 73 |
| FIRESTEEL CK | South Dakota | Poor | 1910 | 116 | 390 |
| STRAY HORSE CK | South Dakota | Poor | 1910 | 116 | 5 |
| CK | South Dakota | Poor | 1910 | 116 | 43 |
| CK | South Dakota | Fair | 1910 | 116 | 15 |
| REE CK | South Dakota | Poor | 1910 | 116 | 43 |
| WOLF CK | South Dakota | Poor | 1910 | 116 | 10 |
| ROCK CK | South Dakota | Poor | 1910 | 116 | 5 |
| ROCK CK | South Dakota | Poor | 1910 | 116 | 5 |
| JAMES RIVER | South Dakota | Poor | 1910 | 116 | 31 |
| FOSTER CREEK | South Dakota | Poor | 1910 | 116 | 50 |
| TURKEY RIDGE CK | South Dakota | Poor | 1910 | 116 | 5 |
| EAST FORK VERMILLION RV | South Dakota | Poor | 1910 | 116 | 30 |
| VERMILLION RV | South Dakota | Poor | 1910 | 116 | 50 |
| SINKING CREEK | Tennessee | Fair | 1910 | 116 | 520 |
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.