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 |
|---|---|---|---|---|---|
| DARBY CREEK | Pennsylvania | Poor | 1908 | 118 | 5,415 |
| PICKERING CREEK | Pennsylvania | Fair | 1908 | 118 | 474 |
| LITTLE CLEARFIELD CREEK | Pennsylvania | Fair | 1908 | 118 | 70 |
| OVER ROARING CREEK | Pennsylvania | Fair | 1908 | 118 | 152 |
| LETORT SPRING CREEK | Pennsylvania | Poor | 1908 | 118 | 22,247 |
| PAXTON CREEK | Pennsylvania | Fair | 1908 | 118 | — |
| CONNELL RUN | Pennsylvania | Fair | 1908 | 118 | 2,994 |
| BROWNS RUN | Pennsylvania | Poor | 1908 | 118 | 30 |
| BROWNS RUN | Pennsylvania | Fair | 1908 | 118 | 30 |
| RATHMEL RUN | Pennsylvania | Fair | 1908 | 118 | 578 |
| MAHANTANGO CREEK | Pennsylvania | Fair | 1908 | 118 | 776 |
| WHITE OAK RUN | Pennsylvania | Poor | 1908 | 118 | 200 |
| OSWAYO CREEK | Pennsylvania | Poor | 1908 | 118 | — |
| PORTAGE CREEK | Pennsylvania | Poor | 1908 | 118 | 25 |
| Mill Creek | Pennsylvania | Poor | 1908 | 118 | 43 |
| HONEY CREEK | Pennsylvania | Fair | 1908 | 118 | 834 |
| SKIPPACK CREEK | Pennsylvania | Fair | 1908 | 118 | 2,965 |
| SKIPPACK CREEK | Pennsylvania | Poor | 1908 | 118 | 26 |
| MILL CREEK | Pennsylvania | Fair | 1908 | 118 | 2,740 |
| ALLEGHENY CREEK | Pennsylvania | Fair | 1908 | 118 | 150 |
| DRAKE RUN | Pennsylvania | Poor | 1908 | 118 | 256 |
| HIGGINS RUN | Pennsylvania | Poor | 1908 | 118 | 477 |
| ROARING RUN | Pennsylvania | Poor | 1908 | 118 | 109 |
| ROARING RUN | Pennsylvania | Fair | 1908 | 118 | 109 |
| GLADDENS RUN | Pennsylvania | Poor | 1908 | 118 | 100 |
| LOWER TWO MILE RUN | Pennsylvania | Poor | 1908 | 118 | 250 |
| RACCOON CREEK | Pennsylvania | Fair | 1908 | 118 | 50 |
| WELTY RUN | Pennsylvania | Poor | 1908 | 118 | 1,033 |
| AMTRAK | Pennsylvania | Fair | 1908 | 118 | 19,989 |
| SEPTA | Pennsylvania | Fair | 1908 | 118 | 10,110 |
| AMTRAK ; CONRAIL | Pennsylvania | Good | 1908 | 118 | 11,500 |
| Second Street | Pennsylvania | Fair | 1908 | 118 | 21,000 |
| CONRAIL(Abandoned) | Pennsylvania | Fair | 1908 | 118 | 2,800 |
| Midvale Avenue | Pennsylvania | Fair | 1908 | 118 | 400 |
| BUFFALO CREEK | Pennsylvania | Fair | 1908 | 118 | 721 |
| P&W RR | Rhode Island | Fair | 1908 | 118 | 4,175 |
| COBB CK | South Dakota | Poor | 1908 | 118 | 25 |
| SPLIT ROCK CK | South Dakota | Poor | 1908 | 118 | 35 |
| TURTLE CREEK | South Dakota | Poor | 1908 | 118 | 55 |
| TURTLE CREEK | Texas | Fair | 1908 | 118 | 12,913 |
| TURTLE CR TRIB | Texas | Fair | 1908 | 118 | 2,796 |
| Pin Oak Creek Tributary | Texas | Fair | 1908 | 118 | 103 |
| OTTER CREEK | Vermont | Fair | 1908 | 118 | 650 |
| CASTLETON RIVER | Vermont | Fair | 1908 | 118 | 40 |
| N.E.C.R.R. & DOG RIVER | Vermont | Poor | 1908 | 118 | 150 |
| LITTLE RIVER | Virginia | Fair | 1908 | 118 | 140 |
| NS Railway | Virginia | Poor | 1908 | 118 | 2,777 |
| KETTLE RIVER | Washington | Fair | 1908 | 118 | 360 |
| MILL CREEK | Washington | Poor | 1908 | 118 | 2,624 |
| JACK CREEK | Wisconsin | Good | 1908 | 118 | 92 |
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.