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 |
|---|---|---|---|---|---|
| ROCKY COULEE WASTEWAY | Washington | Good | 1949 | 77 | 15 |
| WISHKAH RIVER | Washington | Poor | 1949 | 77 | 14,965 |
| WINCHESTER WASTEWAY | Washington | Good | 1949 | 77 | 6,873 |
| COLUMBIA BASIN CANAL | Washington | Good | 1949 | 77 | 1,493 |
| TACOMA NARROWS | Washington | Fair | 1949 | 77 | 44,741 |
| HANSEN CREEK | Washington | Good | 1949 | 77 | 10,162 |
| WHITE RIVER | Washington | Fair | 1949 | 77 | 22,099 |
| CLE ELUM RIVER | Washington | Fair | 1949 | 77 | 17,089 |
| UP RR | Washington | Fair | 1949 | 77 | 409 |
| SPOKANE RIVER | Washington | Fair | 1949 | 77 | 1,110 |
| MILL CREEK | Washington | Fair | 1949 | 77 | 6,272 |
| BLACK CANYON CREEK | Washington | Fair | 1949 | 77 | 1,847 |
| PSPL CO CANAL | Washington | Fair | 1949 | 77 | 22,099 |
| WEST FORK HOQUIAM RIVER | Washington | Fair | 1949 | 77 | 2,198 |
| PINE CANYON & CREEK | Washington | Fair | 1949 | 77 | 1,797 |
| LITTLE WASHOUGAL RIVER | Washington | Good | 1949 | 77 | 5,017 |
| GULCH | Washington | Fair | 1949 | 77 | 1,774 |
| ROSEDALE ST | Washington | Fair | 1949 | 77 | 41,194 |
| LOWER LEWIS CR | Washington | Good | 1949 | 77 | 942 |
| UPPER LEWIS CR | Washington | Good | 1949 | 77 | 942 |
| DEVILS CREEK | Washington | Fair | 1949 | 77 | 942 |
| NORTHRUP CR | Washington | Good | 1949 | 77 | 1,122 |
| LAKE CRESCENT | Washington | Fair | 1949 | 77 | 2,834 |
| LAKE CRESCENT | Washington | Good | 1949 | 77 | 2,834 |
| HILL DITCH | Washington | Good | 1949 | 77 | 3,873 |
| N FK STILLAGUAMISH RIVER | Washington | Good | 1949 | 77 | 4,211 |
| CISPUS RIVER | Washington | Fair | 1949 | 77 | 50 |
| TOATS COULEE CREEK | Washington | Good | 1949 | 77 | 153 |
| TOATS COULEE CREEK | Washington | Good | 1949 | 77 | 153 |
| N. FK SALMON CREEK | Washington | Good | 1949 | 77 | 76 |
| N.FORK SALMON CREEK | Washington | Fair | 1949 | 77 | 76 |
| NORTH FK GOLD CREEK | Washington | Fair | 1949 | 77 | 37 |
| GOLD CREEK | Washington | Good | 1949 | 77 | 60 |
| EIGHTMILE CREEK | Washington | Good | 1949 | 77 | 97 |
| FALLS CREEK | Washington | Good | 1949 | 77 | 196 |
| EIGHTMILE CREEK | Washington | Good | 1949 | 77 | 196 |
| NORTH FORK BOULDER CREEK | Washington | Fair | 1949 | 77 | 158 |
| LITTLE WENATCHEE RIVER | Washington | Fair | 1949 | 77 | 50 |
| MISSION CREEK | Washington | Fair | 1949 | 77 | 10 |
| HARVEY CREEK | Washington | Fair | 1949 | 77 | 20 |
| WEST CANAL | Washington | Fair | 1949 | 77 | 271 |
| ROCK CREEK | Washington | Fair | 1949 | 77 | 2,014 |
| WEST CANAL | Washington | Fair | 1949 | 77 | 155 |
| FISHTRAP CR | Washington | Fair | 1949 | 77 | 195 |
| DEADMAN CREEK | Washington | Fair | 1949 | 77 | 567 |
| SALMON CREEK | Washington | Fair | 1949 | 77 | 867 |
| DECKER CREEK | Washington | Fair | 1949 | 77 | 149 |
| WEST CANAL | Washington | Fair | 1949 | 77 | 313 |
| MCALEER CREEK | Washington | Fair | 1949 | 77 | 600 |
| MCALEER CREEK | Washington | Fair | 1949 | 77 | 600 |
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.