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 |
|---|---|---|---|---|---|
| RED SLOUGH DITCH | Ohio | Good | 1902 | 124 | 210 |
| QUARRY LAKE QUARRY RD | Ohio | Fair | 1902 | 124 | 748 |
| LITTLE WALNUT CREEK | Ohio | Fair | 1902 | 124 | 912 |
| THORN RUN | Ohio | Good | 1902 | 124 | 258 |
| PINEY FORK | Pennsylvania | Fair | 1902 | 124 | 803 |
| CAMPBELLS RUN | Pennsylvania | Fair | 1902 | 124 | 2,938 |
| RAYSTOWN BR.JUNIATA RIV. | Pennsylvania | Good | 1902 | 124 | 168 |
| TULPEHOCKEN CREEK | Pennsylvania | Poor | 1902 | 124 | 280 |
| WYALUSING CREEK | Pennsylvania | Poor | 1902 | 124 | 250 |
| MORRIS RUN | Pennsylvania | Good | 1902 | 124 | 7,314 |
| MORRIS RUN | Pennsylvania | Fair | 1902 | 124 | 544 |
| NORTH BR NESHAMINY CREEK | Pennsylvania | Poor | 1902 | 124 | 50 |
| RAPP CREEK | Pennsylvania | Fair | 1902 | 124 | 400 |
| CONNOQUENESSING CREEK | Pennsylvania | Poor | 1902 | 124 | 250 |
| BRANDYWINE CREEK | Pennsylvania | Fair | 1902 | 124 | 7,797 |
| CANOE CREEK | Pennsylvania | Poor | 1902 | 124 | 50 |
| RJ CORMAN RR | Pennsylvania | Poor | 1902 | 124 | — |
| SOUTH BRANCH ROARING CR | Pennsylvania | Poor | 1902 | 124 | 200 |
| OVER MILL RUN | Pennsylvania | Poor | 1902 | 124 | 1,500 |
| TEN MILE CREEK | Pennsylvania | Poor | 1902 | 124 | 15 |
| BROADHEAD RUN | Pennsylvania | Poor | 1902 | 124 | 204 |
| W BR TUNUNGWANT CREEK | Pennsylvania | Good | 1902 | 124 | 1,300 |
| AMTRAK PHIL-HBG. | Pennsylvania | Poor | 1902 | 124 | 500 |
| PINE CREEK | Pennsylvania | Fair | 1902 | 124 | 35 |
| PANTHER CREEK | Pennsylvania | Poor | 1902 | 124 | 6,528 |
| OVEN RUN | Pennsylvania | Poor | 1902 | 124 | 50 |
| BUFFALO CREEK | Pennsylvania | Good | 1902 | 124 | 100 |
| KINGS CREEK TRIB. | Pennsylvania | Good | 1902 | 124 | 30 |
| CSX RAILROAD | Pennsylvania | Fair | 1902 | 124 | 9,341 |
| SEPTA (BETH BR) | Pennsylvania | Fair | 1902 | 124 | 1,200 |
| Dickerson Run | Pennsylvania | Poor | 1902 | 124 | 50 |
| PASCOAG RIVER | Rhode Island | Poor | 1902 | 124 | 8,750 |
| CENTENARY CREEK | Tennessee | Fair | 1902 | 124 | 80 |
| 1ST BRANCH WHITE R. | Vermont | Fair | 1902 | 124 | 50 |
| WINOOSKI RIVER | Vermont | Fair | 1902 | 124 | 4,200 |
| MILL CREEK | Washington | Fair | 1902 | 124 | 4,412 |
| RT FORK WEST FORK RIVER | West Virginia | Fair | 1902 | 124 | 50 |
| CASEI RIVER | Puerto Rico | Fair | 1902 | 124 | 5,200 |
| TOYO CREEK | Puerto Rico | Fair | 1902 | 124 | 1,800 |
| DEEP RAVINE NO 2 | California | Poor | 1903 | 123 | 50 |
| YORK CREEK | California | Fair | 1903 | 123 | 1,500 |
| STANISLAUS RIVER | California | Fair | 1903 | 123 | 53,500 |
| WEST UNION CREEK | California | Fair | 1903 | 123 | 6,600 |
| CORDILLERAS CREEK | California | Fair | 1903 | 123 | 5,000 |
| BESSEMER DITCH | Colorado | Fair | 1903 | 123 | 992 |
| METRO NORTH RAILROAD | Connecticut | Good | 1903 | 123 | 7,600 |
| N BR CHICAGO RIV CAN | Illinois | Fair | 1903 | 123 | 13,400 |
| S.BR.CHICAGO RIVER | Illinois | Poor | 1903 | 123 | 6,100 |
| WHITE RIVER | Indiana | Fair | 1903 | 123 | 228 |
| POGUES RUN | Indiana | Good | 1903 | 123 | 1,649 |
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.