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 |
|---|---|---|---|---|---|
| COLUMBIA PLATEAU TRAIL | Washington | Good | 1950 | 76 | 1,963 |
| CLARKS CREEK | Washington | Fair | 1950 | 76 | 4,850 |
| TOKUL CREEK | Washington | Fair | 1950 | 76 | 120 |
| CLARKS CREEK | Washington | Fair | 1950 | 76 | 4,850 |
| SIGITOWITZ CREEK | Washington | Fair | 1950 | 76 | 250 |
| MID FK NEWAUKUM RIVER | Washington | Good | 1950 | 76 | 248 |
| RENDSLAND CREEK | Washington | Fair | 1950 | 76 | 526 |
| GREEN RIVER | Washington | Fair | 1950 | 76 | 2,500 |
| STEARNS CREEK | Washington | Fair | 1950 | 76 | 235 |
| DAKOTA CR | Washington | Fair | 1950 | 76 | 808 |
| W. FK. STEARNS CREEK | Washington | Fair | 1950 | 76 | 235 |
| DRY RELIEF | Washington | Fair | 1950 | 76 | 2 |
| BERTRAND CREEK | Washington | Good | 1950 | 76 | 1,522 |
| KETTLE RIVER | Washington | Fair | 1950 | 76 | 235 |
| SIMILKAMEEN RIVER | Washington | Fair | 1950 | 76 | 985 |
| BEAR CREEK | Washington | Fair | 1950 | 76 | 135 |
| SUMAS RIVER | Washington | Fair | 1950 | 76 | 326 |
| WIND RIVER | Washington | Good | 1950 | 76 | 429 |
| FISH TRAP CR | Washington | Good | 1950 | 76 | 300 |
| ROCK CREEK | Washington | Fair | 1950 | 76 | 2,518 |
| MULLEN SLOUGH | Washington | Fair | 1950 | 76 | 1,600 |
| RAVINE | Washington | Good | 1950 | 76 | 1,150 |
| CANAL | Washington | Fair | 1950 | 76 | 1,531 |
| NOOKSACK RIVER | Washington | Fair | 1950 | 76 | 21,350 |
| STOWE CREEK | Washington | Fair | 1950 | 76 | 355 |
| NEUMAN SL | Washington | Fair | 1950 | 76 | 920 |
| SOUTH FORK DAKOTA CR | Washington | Good | 1950 | 76 | 1,500 |
| Overflow Channel | Washington | Fair | 1950 | 76 | 867 |
| ALLEN CREEK | Washington | Fair | 1950 | 76 | 230 |
| OUTLET CREEK | Washington | Fair | 1950 | 76 | 1,388 |
| Irrigation canal | Washington | Fair | 1950 | 76 | 36 |
| Crab Creek | Washington | Fair | 1950 | 76 | 36 |
| CLOVER CREEK | Washington | Fair | 1950 | 76 | 50 |
| MUCK CREEK | Washington | Fair | 1950 | 76 | 10 |
| DRAINAGE CANAL | Washington | Fair | 1950 | 76 | 200 |
| MUCK CREEK | Washington | Good | 1950 | 76 | 200 |
| SEQUALITCHEW CREEK | Washington | Fair | 1950 | 76 | 200 |
| DRAINAGE CANAL | Washington | Fair | 1950 | 76 | 100 |
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.