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 |
|---|---|---|---|---|---|
| HUTCHINSON RIVER | New York | Poor | 1906 | 120 | 15,262 |
| Abnd.CSXT/P MRRIS | New York | Fair | 1906 | 120 | 2,232 |
| AMTRAK/CSXT/P&W | New York | Fair | 1906 | 120 | 13,964 |
| AMTRAK/CSXT/P&W | New York | Fair | 1906 | 120 | 3,657 |
| AMTRAK/CSXT/P&W | New York | Fair | 1906 | 120 | — |
| AMTRAK/CSXT/P&W | New York | Fair | 1906 | 120 | 29,040 |
| AMTRAK/CSXT/P&W | New York | Fair | 1906 | 120 | 4,623 |
| AMTRAK | New York | Fair | 1906 | 120 | 18,982 |
| METRO NO COMMUTER | New York | Fair | 1906 | 120 | 19,360 |
| METRO NO COMMUTER | New York | Fair | 1906 | 120 | — |
| MAC CRACKEN AVE E METRO | New York | Poor | 1906 | 120 | 1,715 |
| METRO NO COMMUTER | New York | Fair | 1906 | 120 | 33,834 |
| METRO NO COMMUTER | New York | Fair | 1906 | 120 | 16,592 |
| NYCTA-DYRE AVE LN | New York | Fair | 1906 | 120 | 10,374 |
| N Y & ATLANTIC/LI | New York | Fair | 1906 | 120 | — |
| N Y & ATLANTIC/LI | New York | Good | 1906 | 120 | 3,216 |
| N Y & ATLANTIC/LI | New York | Fair | 1906 | 120 | — |
| N Y & ATLANTIC/LI | New York | Fair | 1906 | 120 | 7,945 |
| NYCTA SEA BEACH N Y & A | New York | Fair | 1906 | 120 | 8,446 |
| CLOVE LK PK STRM | New York | Fair | 1906 | 120 | 13,041 |
| LONG ISLAND-PT JF | New York | Fair | 1906 | 120 | 4,202 |
| BLACK CREEK | New York | Fair | 1906 | 120 | 187 |
| CANAL LOCK E3 SPILLWAY | New York | Fair | 1906 | 120 | 250 |
| MOUSE RIVER | North Dakota | Poor | 1906 | 120 | 25 |
| STREAM | Ohio | Fair | 1906 | 120 | 1,573 |
| OVER W&L.E. RR | Ohio | Poor | 1906 | 120 | 6,311 |
| LONG RUN | Ohio | Fair | 1906 | 120 | 937 |
| ALUM CREEK | Ohio | Poor | 1906 | 120 | 267 |
| SEVEN MILE CREEK | Ohio | Fair | 1906 | 120 | 351 |
| MULGEE CREEK | Ohio | Fair | 1906 | 120 | 272 |
| BEECH CREEK | Ohio | Fair | 1906 | 120 | 394 |
| CREEK | Oklahoma | Fair | 1906 | 120 | 100 |
| BEAVER CREEK | Oklahoma | Fair | 1906 | 120 | 75 |
| MEDICINE CREEK | Oklahoma | Poor | 1906 | 120 | 200 |
| S. CANADIAN RIVER | Oklahoma | Poor | 1906 | 120 | 250 |
| OWYHEE RIVER (ROME) | Oregon | Poor | 1906 | 120 | 20 |
| THOMPSON RUN | Pennsylvania | Poor | 1906 | 120 | 1,997 |
| GEDDES RUN | Pennsylvania | Fair | 1906 | 120 | 314 |
| PINE RUN | Pennsylvania | Fair | 1906 | 120 | 1,000 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 8,201 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 1,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 1,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 2,500 |
| OVER MILL RUN | Pennsylvania | Fair | 1906 | 120 | 3,500 |
| MILL RACE | Pennsylvania | Fair | 1906 | 120 | 4,717 |
| SEPTA (P&W) | Pennsylvania | Fair | 1906 | 120 | 10,652 |
| WEST CREEK | Pennsylvania | Fair | 1906 | 120 | 650 |
| MACOBY CREEK | Pennsylvania | Fair | 1906 | 120 | 1,209 |
| SHAMOKIN CREEK | Pennsylvania | Poor | 1906 | 120 | 600 |
| KISKIMINETAS & NS R/R | Pennsylvania | Poor | 1906 | 120 | 398 |
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.