Historic Bridges in Washington
1,188 bridges built before 1951 in Washington still in service today.
Bridges Built Before 1951
The United States has 1,188 bridges in Washington 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 |
|---|---|---|---|---|---|
| HATTON COULEE | Washington | Fair | 1915 | 111 | 3 |
| CLOQUALLUM CREEK | Washington | Fair | 1915 | 111 | 1,380 |
| DRY WASH | Washington | Fair | 1915 | 111 | 1 |
| S FORK PALOUSE RIVER | Washington | Fair | 1915 | 111 | 2,034 |
| PORTAGE BAY | Washington | Poor | 1915 | 111 | 35,000 |
| MILL CREEK | Washington | Fair | 1915 | 111 | 10,563 |
| DESCHUTES RIVER | Washington | Fair | 1915 | 111 | 7,400 |
| PATIT CREEK | Washington | Fair | 1915 | 111 | 100 |
| PATIT CREEK | Washington | Fair | 1915 | 111 | 225 |
| RATTLERS RUN CREEK | Washington | Good | 1915 | 111 | 85 |
| PILCHUCK CR | Washington | Fair | 1916 | 110 | 63 |
| TOUCHET RIVER | Washington | Poor | 1916 | 110 | 416 |
| COLUMBIA RIVER | Washington | Fair | 1916 | 110 | 65,013 |
| WILKESON CREEK | Washington | Fair | 1916 | 110 | 3,288 |
| FERN CREEK | Washington | Fair | 1916 | 110 | 85 |
| CRAB CREEK | Washington | Good | 1916 | 110 | 30 |
| CRAB CREEK | Washington | Fair | 1916 | 110 | 103 |
| WHISKEY CREEK | Washington | Fair | 1916 | 110 | 170 |
| CHIMACUM CREEK | Washington | Fair | 1916 | 110 | 8,718 |
| INTERMITTENT STREAM | Washington | Fair | 1916 | 110 | 55 |
| DRY WASH | Washington | Fair | 1916 | 110 | 26 |
| NINE MILE CANYON | Washington | Fair | 1916 | 110 | 30 |
| CON-NA-WAI CREEK | Washington | Fair | 1916 | 110 | 23 |
| HANGMAN CREEK | Washington | Fair | 1916 | 110 | 406 |
| PINE CREEK | Washington | Fair | 1916 | 110 | 25 |
| SLOUGH | Washington | Fair | 1916 | 110 | 226 |
| BAKER RIVER | Washington | Fair | 1916 | 110 | 150 |
| MILL CREEK | Washington | Poor | 1916 | 110 | 1,970 |
| YAKIMA RIVER | Washington | Fair | 1917 | 109 | 17,681 |
| WALLA WALLA R | Washington | Fair | 1917 | 109 | 8,169 |
| WOODWARD CANYON | Washington | Fair | 1917 | 109 | 8,012 |
| HALF MOON CREEK | Washington | Fair | 1917 | 109 | 1,600 |
| WEBER COULEE | Washington | Fair | 1917 | 109 | 57 |
| COAL CREEK | Washington | Fair | 1917 | 109 | 35 |
| COW CREEK | Washington | Fair | 1917 | 109 | 62 |
| REBEL FLAT CREEK | Washington | Fair | 1917 | 109 | 430 |
| GREEN CREEK | Washington | Fair | 1917 | 109 | 178 |
| HARRIS CREEK | Washington | Fair | 1917 | 109 | 347 |
| KENNEDY CREEK | Washington | Fair | 1917 | 109 | 72 |
| COAL CREEK | Washington | Fair | 1917 | 109 | 50 |
| COAL CREEK | Washington | Fair | 1917 | 109 | 87 |
| SUMAS RIVER | Washington | Fair | 1917 | 109 | 220 |
| DEARBORN ST | Washington | Fair | 1917 | 109 | 22,000 |
| SHIP CANAL | Washington | Fair | 1917 | 109 | 60,000 |
| SHIP CANAL | Washington | Fair | 1917 | 109 | 29,300 |
| SPOKANE RIVER | Washington | Good | 1917 | 109 | 2,423 |
| WILLAPA RIVER | Washington | Fair | 1917 | 109 | 72 |
| CHINA CRK | Washington | Fair | 1918 | 108 | 5,822 |
| WILKESON CREEK | Washington | Fair | 1918 | 108 | 1,964 |
| TRAP CREEK | Washington | Good | 1918 | 108 | 1,825 |
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.