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 |
|---|---|---|---|---|---|
| SATSOP RIVER | Washington | Fair | 1938 | 88 | 1,869 |
| 25TH AVE NE | Washington | Fair | 1938 | 88 | 18,000 |
| DEER CREEK | Washington | Good | 1938 | 88 | 1,505 |
| MILK CREEK | Washington | Fair | 1939 | 87 | 881 |
| ICICLE CANAL | Washington | Fair | 1939 | 87 | 10 |
| ICICLE CREEK | Washington | Fair | 1939 | 87 | 2 |
| SNAKE RIVER | Washington | Fair | 1939 | 87 | 21,000 |
| NP RY | Washington | Fair | 1939 | 87 | 15,568 |
| HYLEBOS WATERWAY | Washington | Fair | 1939 | 87 | 1,000 |
| CRAB CREEK | Washington | Fair | 1939 | 87 | 622 |
| S FK SKYKOMISH RIVER | Washington | Fair | 1939 | 87 | 1,160 |
| METHOW RIVER | Washington | Poor | 1939 | 87 | 1,847 |
| METHOW RIVER | Washington | Poor | 1939 | 87 | 1,847 |
| METHOW RIVER | Washington | Poor | 1939 | 87 | 1,847 |
| METHOW RIVER | Washington | Poor | 1939 | 87 | 1,847 |
| METHOW RIVER | Washington | Fair | 1939 | 87 | 1,578 |
| SKAMOKAWA CREEK | Washington | Fair | 1939 | 87 | 1,573 |
| E FORK LEWIS RIVER | Washington | Poor | 1939 | 87 | 41,939 |
| INDIAN CREEK | Washington | Fair | 1939 | 87 | 1,944 |
| CHEHALIS RIVER | Washington | Fair | 1939 | 87 | 11,576 |
| JORGENSON SLOUGH | Washington | Fair | 1939 | 87 | 2,815 |
| TIDE SLOUGH | Washington | Fair | 1939 | 87 | 2,815 |
| COLVILLE RIVER | Washington | Good | 1939 | 87 | 1,142 |
| METHOW RIVER | Washington | Fair | 1939 | 87 | 1,578 |
| TOLMIE CREEK | Washington | Fair | 1939 | 87 | 300 |
| NEWAUKUM CREEK | Washington | Good | 1939 | 87 | 394 |
| CLARKS CREEK | Washington | Good | 1939 | 87 | 500 |
| USIS CANAL | Washington | Fair | 1939 | 87 | 3,637 |
| PROVIDENCE COULEE | Washington | Fair | 1939 | 87 | 156 |
| DRY WASH | Washington | Fair | 1939 | 87 | 27 |
| ANDERSON CR | Washington | Good | 1939 | 87 | 450 |
| DRAIN | Washington | Fair | 1939 | 87 | 1,805 |
| USIS CANAL | Washington | Fair | 1939 | 87 | 1,805 |
| CHAMBERS CREEK | Washington | Fair | 1939 | 87 | 24,453 |
| DEADMAN CREEK | Washington | Fair | 1939 | 87 | 280 |
| LAKE WASHINGTON | Washington | Poor | 1940 | 86 | 68,544 |
| LAKE WASHINGTON | Washington | Fair | 1940 | 86 | 68,544 |
| LAKE WASHINGTON | Washington | Good | 1940 | 86 | 68,544 |
| CEDAR R | Washington | Fair | 1940 | 86 | 22,000 |
| LEWIS RIVER | Washington | Poor | 1940 | 86 | 41,939 |
| ANTHRACITE CREEK | Washington | Poor | 1940 | 86 | 5,782 |
| S FORK SKYKOMISH RIVER | Washington | Fair | 1940 | 86 | 5,782 |
| WHITE SALMON R | Washington | Fair | 1940 | 86 | 3,250 |
| SNOW CREEK | Washington | Fair | 1940 | 86 | 4,980 |
| RICHARDS RD | Washington | Fair | 1940 | 86 | 69,741 |
| SULTAN RIVER | Washington | Fair | 1940 | 86 | 23,022 |
| DECEPTION CR | Washington | Fair | 1940 | 86 | 5,641 |
| ICICLE DITCH SPILLWAY | Washington | Fair | 1940 | 86 | 13,056 |
| PESHASTIN CREEK | Washington | Fair | 1940 | 86 | 7,446 |
| CHAPIN CREEK | Washington | Fair | 1940 | 86 | 6,124 |
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.