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 |
|---|---|---|---|---|---|
| WEBSTER AVENUE | New York | Good | 1905 | 121 | 22,926 |
| GOWANUS CANAL | New York | Fair | 1905 | 121 | 4,179 |
| Aband.CSXT-PT MRR | New York | Fair | 1905 | 121 | 9,847 |
| CSX TRANS/P MRRIS | New York | Good | 1905 | 121 | 1,080 |
| AMTRAK/CSXT/P&W | New York | Fair | 1905 | 121 | 13,046 |
| 65TH ST TRANSVERS | New York | Fair | 1905 | 121 | 133 |
| CSX LEASED AMTRAK | New York | Fair | 1905 | 121 | 442 |
| CENTER BROOK | New York | Fair | 1905 | 121 | 23 |
| MAD RIVER | Ohio | Good | 1905 | 121 | 324 |
| SALT RUN | Ohio | Fair | 1905 | 121 | 3,809 |
| HEMLOCK CREEK | Ohio | Poor | 1905 | 121 | 619 |
| HELLBRANCH (GROVE CITY) | Ohio | Fair | 1905 | 121 | 2,552 |
| NORFOLK SO RR (HUBBARD) | Ohio | Good | 1905 | 121 | 2,861 |
| MONDAY CREEK | Ohio | Good | 1905 | 121 | 155 |
| CROCKETS RUN | Ohio | Fair | 1905 | 121 | 351 |
| LAUREL RUN | Ohio | Fair | 1905 | 121 | 155 |
| QUEER CREEK | Ohio | Good | 1905 | 121 | 50 |
| SR-7 RR & OHIO RIVER | Ohio | Poor | 1905 | 121 | 6,845 |
| JOHNS CREEK | Ohio | Fair | 1905 | 121 | 70 |
| TRIB MEIGS CREEK | Ohio | Fair | 1905 | 121 | 30 |
| MANS FORK | Ohio | Good | 1905 | 121 | 96 |
| TRIB. WOLF CREEK | Ohio | Fair | 1905 | 121 | 209 |
| ISLAND RUN | Ohio | Good | 1905 | 121 | 209 |
| FLAT RUN | Ohio | Good | 1905 | 121 | 167 |
| PRAIRIE CREEK | Ohio | Fair | 1905 | 121 | 209 |
| TRIBUTARY RALSTON RUN | Ohio | Fair | 1905 | 121 | 471 |
| DUCK CREEK * JACKSO | Ohio | Fair | 1905 | 121 | 209 |
| SUGAR CREEK | Ohio | Fair | 1905 | 121 | 410 |
| KISER DITCH | Ohio | Fair | 1905 | 121 | 23 |
| CREEK | Oklahoma | Poor | 1905 | 121 | 25 |
| UP R.R. UNDER | Oklahoma | Poor | 1905 | 121 | 7,560 |
| CREEK | Oklahoma | Fair | 1905 | 121 | 100 |
| B-15 X MACLEAY PARK | Oregon | Fair | 1905 | 121 | 4,501 |
| Middle Creek | Pennsylvania | Good | 1905 | 121 | 25 |
| WYLIE RUN | Pennsylvania | Poor | 1905 | 121 | 6,411 |
| WASHINGTON BLVD (RT 8) | Pennsylvania | Fair | 1905 | 121 | 7,850 |
| N-S RR-ALLEGHENY PARK | Pennsylvania | Poor | 1905 | 121 | 21,000 |
| MCKINLEY RUN | Pennsylvania | Fair | 1905 | 121 | 520 |
| BLOCKHOUSE RUN | Pennsylvania | Fair | 1905 | 121 | 50 |
| SACONY CREEK | Pennsylvania | Poor | 1905 | 121 | 65 |
| MOSELEM CREEK | Pennsylvania | Poor | 1905 | 121 | 513 |
| MILL CREEK | Pennsylvania | Poor | 1905 | 121 | 3,809 |
| YELLOW CREEK | Pennsylvania | Fair | 1905 | 121 | 200 |
| N BR SLIPPERY ROCK CREEK | Pennsylvania | Fair | 1905 | 121 | 100 |
| MILL RACE | Pennsylvania | Poor | 1905 | 121 | 2,031 |
| E BR OF BRANDYWINE CREEK | Pennsylvania | Poor | 1905 | 121 | 1,361 |
| MARSH CREEK | Pennsylvania | Fair | 1905 | 121 | 1,399 |
| FRENCH CREEK | Pennsylvania | Poor | 1905 | 121 | 171 |
| TOBY CREEK | Pennsylvania | Good | 1905 | 121 | 67 |
| POTTS RUN | Pennsylvania | Poor | 1905 | 121 | — |
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.