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 |
|---|---|---|---|---|---|
| CLOQUALLUM CREEK | Washington | Fair | 1937 | 89 | 7,669 |
| MOX CHEHALIS CREEK | Washington | Fair | 1937 | 89 | 5,851 |
| PORTER CREEK | Washington | Fair | 1937 | 89 | 5,851 |
| GIBSON CREEK | Washington | Fair | 1937 | 89 | 5,851 |
| PALOUSE RIVER | Washington | Poor | 1937 | 89 | 3,094 |
| SHEEP CREEK | Washington | Fair | 1937 | 89 | 624 |
| KLICKITAT CREEK | Washington | Good | 1937 | 89 | 6,548 |
| E FORK LEWIS RIVER | Washington | Fair | 1937 | 89 | 167 |
| CLOVER CREEK | Washington | Fair | 1937 | 89 | 17,440 |
| YAKIMA RIVER | Washington | Fair | 1937 | 89 | 537 |
| CLOVER CREEK | Washington | Fair | 1937 | 89 | 6,325 |
| PERRY CREEK | Washington | Good | 1937 | 89 | 587 |
| SQUALLY CREEK | Washington | Good | 1937 | 89 | 625 |
| ROZA CANAL | Washington | Good | 1937 | 89 | 1,500 |
| MASHEL RIVER | Washington | Fair | 1937 | 89 | 2,900 |
| CARBON RIVER | Washington | Poor | 1937 | 89 | 100 |
| CANYON CR | Washington | Fair | 1937 | 89 | 418 |
| PACIFIC TO A ST | Washington | Poor | 1937 | 89 | 4,700 |
| DIVISION CREEK | Washington | Fair | 1937 | 89 | 2,080 |
| SQUALLICUM CRK-CMSTP&P R | Washington | Fair | 1937 | 89 | 6,400 |
| ROSLYN CR | Washington | Fair | 1938 | 88 | 5,966 |
| PALOUSE RIVER | Washington | Fair | 1938 | 88 | 3,048 |
| MILL CREEK | Washington | Fair | 1938 | 88 | 7,862 |
| W FK SKAMOKAWA CR | Washington | Fair | 1938 | 88 | 1,255 |
| GRAYS RIVER | Washington | Fair | 1938 | 88 | 1,152 |
| TERRAIN FLOOD PLAIN | Washington | Fair | 1938 | 88 | 1,152 |
| CNTRY RD KLINTS SLOUGH | Washington | Fair | 1938 | 88 | 1,152 |
| KLINTS SLOUGH | Washington | Fair | 1938 | 88 | 1,152 |
| S FK SKYKOMISH RIVER | Washington | Fair | 1938 | 88 | 6,019 |
| ROCK CR | Washington | Fair | 1938 | 88 | 6,440 |
| NP RY | Washington | Good | 1938 | 88 | 7,064 |
| COLUMBIA R PUGET ISLAND | Washington | Fair | 1938 | 88 | 1,973 |
| UNION FLAT CREEK | Washington | Good | 1938 | 88 | 2,316 |
| PALOUSE RIVER | Washington | Poor | 1938 | 88 | 3,246 |
| CALAWAH RIVER | Washington | Fair | 1938 | 88 | 5,775 |
| RR & CITY STREETS | Washington | Fair | 1938 | 88 | 18,250 |
| SLIDE AREA | Washington | Fair | 1938 | 88 | 1,283 |
| LITTLE QUILCENE RIVER | Washington | Fair | 1938 | 88 | 2,792 |
| S FK TILTON RIVER | Washington | Poor | 1938 | 88 | 2,625 |
| WEBER COULEE | Washington | Good | 1938 | 88 | 94 |
| CLOVER CREEK | Washington | Good | 1938 | 88 | 16,705 |
| FARRIER COULEE | Washington | Fair | 1938 | 88 | 57 |
| WEBER COULEE | Washington | Good | 1938 | 88 | 66 |
| DRY WASH | Washington | Fair | 1938 | 88 | 143 |
| MATNEY CREEK | Washington | Fair | 1938 | 88 | 807 |
| BERTRAND CR | Washington | Fair | 1938 | 88 | 1,839 |
| PARKE CREEK | Washington | Fair | 1938 | 88 | 311 |
| DRY WASH | Washington | Fair | 1938 | 88 | 14 |
| WEBER COULEE | Washington | Fair | 1938 | 88 | 41 |
| BAUER COULEE | Washington | Fair | 1938 | 88 | 53 |
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.