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 |
|---|---|---|---|---|---|
| FORK CREEK | Washington | Good | 1918 | 108 | 1,825 |
| CRAB CREEK | Washington | Poor | 1918 | 108 | 21 |
| WAPATOX CANAL | Washington | Good | 1918 | 108 | 318 |
| SOUTH SLOUGH | Washington | Fair | 1918 | 108 | 5,889 |
| GREEN RIVER | Washington | Fair | 1918 | 108 | 2,061 |
| WAPATOX CANAL | Washington | Good | 1918 | 108 | 260 |
| SOUTH FORK PINE CREEK | Washington | Fair | 1918 | 108 | 20 |
| DRY WASH | Washington | Fair | 1918 | 108 | 500 |
| THOMSEN SLOUGH | Washington | Fair | 1919 | 107 | 4,051 |
| TOUCHET RIVER | Washington | Fair | 1919 | 107 | 7,642 |
| DRY RUN | Washington | Fair | 1919 | 107 | 8,012 |
| OHOP CREEK OVERFLOW | Washington | Fair | 1919 | 107 | 85 |
| OHOP CREEK | Washington | Fair | 1919 | 107 | 85 |
| S.V.I.D. CANAL | Washington | Poor | 1919 | 107 | 400 |
| LATAH CREEK | Washington | Fair | 1919 | 107 | 9,669 |
| CROWN Z MILL WATER DITCH | Washington | Fair | 1919 | 107 | 4,231 |
| W FK NOOKACHAMPS CR | Washington | Fair | 1920 | 106 | 6,465 |
| COVE CREEK | Washington | Fair | 1920 | 106 | 866 |
| SPRING FLAT CREEK | Washington | Poor | 1920 | 106 | 9,093 |
| SAMISH RIVER | Washington | Fair | 1920 | 106 | 4,112 |
| PATAHA CR | Washington | Poor | 1920 | 106 | 1,889 |
| HALF BRIDGE | Washington | Fair | 1920 | 106 | 2,472 |
| MUCK CREEK OVERFLOW | Washington | Fair | 1920 | 106 | 11,031 |
| MUCK CREEK | Washington | Fair | 1920 | 106 | 11,031 |
| HILLSIDE | Washington | Good | 1920 | 106 | 2,472 |
| DRY CREEK | Washington | Fair | 1920 | 106 | 4,314 |
| DRY RUN | Washington | Fair | 1920 | 106 | 377 |
| RED RIVER | Washington | Fair | 1920 | 106 | 5,592 |
| MUD FLAT CREEK | Washington | Fair | 1920 | 106 | 65 |
| RUSSELL CREEK | Washington | Fair | 1920 | 106 | 2,595 |
| SOUTH FORK COPPEI CR | Washington | Poor | 1920 | 106 | 60 |
| REBEL FLAT CREEK | Washington | Fair | 1920 | 106 | 672 |
| CASE INLET | Washington | Fair | 1920 | 106 | 385 |
| YELLOWHAWK CREEK | Washington | Fair | 1920 | 106 | 1,795 |
| CORBETT CREEK | Washington | Good | 1920 | 106 | 18 |
| INTERMITTENT STREAM | Washington | Fair | 1920 | 106 | 407 |
| FARRIER COULEE | Washington | Fair | 1920 | 106 | 207 |
| KAPOWSIN CREEK | Washington | Fair | 1920 | 106 | 1,850 |
| PESHASTIN CREEK | Washington | Fair | 1920 | 106 | 428 |
| PROVIDENCE COULEE | Washington | Fair | 1920 | 106 | 279 |
| UP RR | Washington | Fair | 1920 | 106 | 113 |
| NORTH FORK PALOUSE RIVER | Washington | Fair | 1920 | 106 | 300 |
| ASOTIN CREEK | Washington | Fair | 1920 | 106 | 500 |
| MILL CREEK | Washington | Poor | 1920 | 106 | 1,970 |
| MILL CREEK | Washington | Good | 1920 | 106 | 5,139 |
| LATAH CREEK | Washington | Good | 1920 | 106 | 2,390 |
| ROCK CREEK | Washington | Fair | 1920 | 106 | 4,017 |
| WHATCOM CREEK | Washington | Fair | 1920 | 106 | 8,700 |
| KANAKA CREEK | Washington | Fair | 1920 | 106 | 72 |
| BOULDER CREEK | Washington | Fair | 1920 | 106 | 1 |
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.