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 |
|---|---|---|---|---|---|
| GRANDY CREEK | Washington | Good | 1950 | 76 | 5,460 |
| HALF BR | Washington | Fair | 1950 | 76 | 2,472 |
| PALOUSE RIVER | Washington | Good | 1950 | 76 | 377 |
| PEND OREILLE RIVER | Washington | Fair | 1950 | 76 | 1,288 |
| E FOSTER CREEK | Washington | Good | 1950 | 76 | 1,239 |
| E FOSTER CREEK | Washington | Fair | 1950 | 76 | 1,239 |
| E FOSTER CREEK | Washington | Fair | 1950 | 76 | 1,239 |
| W FOSTER CREEK | Washington | Fair | 1950 | 76 | 1,239 |
| DIOBSUD CREEK | Washington | Good | 1950 | 76 | 1,930 |
| SNAKE RIVER & BNRR | Washington | Fair | 1950 | 76 | 13,260 |
| EAGLE CR | Washington | Good | 1950 | 76 | 3,065 |
| HUMPTULIPS OVERFLOW | Washington | Fair | 1950 | 76 | 2,244 |
| HUMPTULIPS RIVER | Washington | Fair | 1950 | 76 | 2,244 |
| WILLAPA HILLS TRAIL | Washington | Good | 1950 | 76 | 1,600 |
| SR 285 S-W RAMP | Washington | Fair | 1950 | 76 | 6,493 |
| NOOKSACK R OVERFLOW | Washington | Good | 1950 | 76 | 7,931 |
| NOOKSACK R | Washington | Poor | 1950 | 76 | 7,931 |
| NOOKSACK R OVERFLOW | Washington | Fair | 1950 | 76 | 7,931 |
| SNYDER CREEK | Washington | Good | 1950 | 76 | 532 |
| HOKO RIVER | Washington | Fair | 1950 | 76 | 1,031 |
| JOE LEARY SL | Washington | Fair | 1950 | 76 | 981 |
| LOWELL ROAD | Washington | Good | 1950 | 76 | 94,939 |
| I-5 RAMPS | Washington | Fair | 1950 | 76 | 5,763 |
| COAL CREEK | Washington | Fair | 1950 | 76 | 17,758 |
| DRY COULEE | Washington | Fair | 1950 | 76 | 165 |
| JOHNSON CREEK | Washington | Fair | 1950 | 76 | 141 |
| FALLS CREEK | Washington | Good | 1950 | 76 | 25 |
| CHEWUCH RIVER | Washington | Good | 1950 | 76 | 24 |
| WYNOOCHEE RIVER | Washington | Fair | 1950 | 76 | 50 |
| HAMMA HAMMA RIVER | Washington | Fair | 1950 | 76 | 30 |
| DONKEY CREEK | Washington | Fair | 1950 | 76 | 150 |
| N FK CALAWAH RIVER | Washington | Good | 1950 | 76 | 50 |
| COWICHE CREEK | Washington | Fair | 1950 | 76 | 393 |
| PALOUSE RIVER | Washington | Fair | 1950 | 76 | 176 |
| HALE PASSAGE | Washington | Fair | 1950 | 76 | 1,300 |
| HALE PASSAGE | Washington | Fair | 1950 | 76 | 1,300 |
| LAKE CREEK | Washington | Fair | 1950 | 76 | 1,112 |
| DEADMAN CREEK | Washington | Good | 1950 | 76 | 196 |
| MISSION CREEK | Washington | Good | 1950 | 76 | 1,505 |
| PARADISE CREEK | Washington | Good | 1950 | 76 | 321 |
| WEST CANAL | Washington | Poor | 1950 | 76 | 687 |
| LOST RIVER | Washington | Poor | 1950 | 76 | 95 |
| WEBER WASTEWAY | Washington | Good | 1950 | 76 | 156 |
| COAL CREEK | Washington | Fair | 1950 | 76 | 3,189 |
| NEWAUKUM CREEK | Washington | Fair | 1950 | 76 | 1,592 |
| DAKOTA CR | Washington | Fair | 1950 | 76 | 844 |
| NEWAUKUM CREEK | Washington | Fair | 1950 | 76 | 1,500 |
| CAMPBELL CREEK | Washington | Poor | 1950 | 76 | 257 |
| ROCKY COULEE | Washington | Fair | 1950 | 76 | 19 |
| JOHNSON CR | Washington | Fair | 1950 | 76 | 1,031 |
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.