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 |
|---|---|---|---|---|---|
| DAKOTA CR | Washington | Fair | 1930 | 96 | 189 |
| WENATCHEE RIVER | Washington | Fair | 1930 | 96 | 1,857 |
| PINE CREEK | Washington | Good | 1930 | 96 | 521 |
| CEDAR CREEK | Washington | Fair | 1930 | 96 | 1,173 |
| SKAGIT RIVER | Washington | Fair | 1930 | 96 | 608 |
| S.V.I.D. CANAL | Washington | Fair | 1930 | 96 | 9,199 |
| THORN CREEK | Washington | Fair | 1930 | 96 | 130 |
| CURRIER CREEK | Washington | Poor | 1930 | 96 | 449 |
| CURRIER CREEK | Washington | Fair | 1930 | 96 | 2,216 |
| SVID CANAL | Washington | Fair | 1930 | 96 | 3,360 |
| SAUK RIVER | Washington | Fair | 1930 | 96 | 158 |
| CASCADE CANAL | Washington | Fair | 1930 | 96 | 2,578 |
| LITTLE WASHOUGAL RIVER | Washington | Fair | 1930 | 96 | 1,830 |
| EAST FORK HOQUIAM RIVER | Washington | Fair | 1930 | 96 | 95 |
| NORTH FORK | Washington | Fair | 1930 | 96 | 800 |
| HILINE CANAL | Washington | Fair | 1930 | 96 | 1,028 |
| CHEHALIS RIVER | Washington | Fair | 1930 | 96 | 921 |
| S FORK PALOUSE RIVER | Washington | Fair | 1930 | 96 | 2,554 |
| NPRR &SO TACOMA WAY | Washington | Fair | 1930 | 96 | 10,550 |
| NE PACIFIC ST | Washington | Fair | 1930 | 96 | 35,000 |
| NE 40TH ST BURKE GILMAN | Washington | Fair | 1930 | 96 | 37,000 |
| PORTAGE BAY PL E | Washington | Poor | 1930 | 96 | 36,000 |
| COTTONWOOD CREEK | Washington | Poor | 1930 | 96 | 200 |
| PAHA DRAINAGE DITCH | Washington | Fair | 1930 | 96 | 846 |
| BURLINGTON NORTHERN | Washington | Fair | 1930 | 96 | 6,000 |
| DRAINAGE | Washington | Good | 1930 | 96 | 65 |
| SPRING VALLEY CREEK | Washington | Fair | 1930 | 96 | 506 |
| SKAGIT RIVER | Washington | Fair | 1930 | 96 | 220 |
| SKAGIT RIVER | Washington | Fair | 1930 | 96 | 250 |
| SKAGIT RIVER | Washington | Fair | 1930 | 96 | 220 |
| BNRR | Washington | Fair | 1930 | 96 | 20,000 |
| WHITE RIVER | Washington | Fair | 1930 | 96 | 1,786 |
| KLICKITAT CREEK | Washington | Fair | 1930 | 96 | 1,786 |
| BRADEN CREEK | Washington | Good | 1931 | 95 | 1,151 |
| LAKE UNION | Washington | Fair | 1931 | 95 | 61,259 |
| HOH RIVER | Washington | Fair | 1931 | 95 | 1,438 |
| SNOQUALMIE RIVER | Washington | Poor | 1931 | 95 | 9,740 |
| JONES CREEK | Washington | Good | 1931 | 95 | 2,524 |
| HALF BRIDGE | Washington | Fair | 1931 | 95 | 2,173 |
| HORSETHIEF CANYON | Washington | Good | 1931 | 95 | 2,173 |
| N FK NOOKSACK R WARNICK | Washington | Fair | 1931 | 95 | 1,951 |
| CORNELL CREEK | Washington | Poor | 1931 | 95 | 1,951 |
| GN RY COLONY CREEK | Washington | Fair | 1931 | 95 | 2,472 |
| TOUCHET RIVER | Washington | Fair | 1931 | 95 | 5,054 |
| SAN POIL R | Washington | Poor | 1931 | 95 | 705 |
| SAN POIL RIVER | Washington | Poor | 1931 | 95 | 193 |
| WANITY SLOUGH | Washington | Fair | 1931 | 95 | 5,901 |
| TILTON RIVER | Washington | Poor | 1931 | 95 | 2,351 |
| PALOUSE RIVER | Washington | Fair | 1931 | 95 | 6,729 |
| CHEHALIS R | Washington | Fair | 1931 | 95 | 1,846 |
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.