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 |
|---|---|---|---|---|---|
| B STREET TO D STREET-SR7 | Washington | Fair | 1947 | 79 | 4,617 |
| FISHTRAP CREEK | Washington | Fair | 1947 | 79 | 6,187 |
| UNION PACIFIC RR | Washington | Good | 1947 | 79 | 285 |
| WINCHESTER WASTEWAY | Washington | Good | 1948 | 78 | 5 |
| ROCKY COULEE DIVERSION | Washington | Fair | 1948 | 78 | 1 |
| ROCKY COULEE DRAIN WASTE | Washington | Fair | 1948 | 78 | 5 |
| COLUMBIA RIVER | Washington | Poor | 1948 | 78 | 904 |
| COWLITZ RIVER | Washington | Fair | 1948 | 78 | 2,712 |
| ALDER CREEK | Washington | Good | 1948 | 78 | 5,888 |
| WANITY SLOUGH | Washington | Good | 1948 | 78 | 6,219 |
| WAPATO CANAL | Washington | Fair | 1948 | 78 | 8,427 |
| COAL CREEK | Washington | Fair | 1948 | 78 | 785 |
| SOL DUC RIVER | Washington | Fair | 1948 | 78 | 2,881 |
| SOL DUC RIVER | Washington | Fair | 1948 | 78 | 2,881 |
| FRENCH CREEK | Washington | Fair | 1948 | 78 | 25,899 |
| FARM RD & DRAIN DITCH | Washington | Good | 1948 | 78 | 25,899 |
| SIWASH CREEK | Washington | Good | 1948 | 78 | 4,282 |
| MASHEL RIVER | Washington | Fair | 1948 | 78 | 1,758 |
| CRAB CREEK | Washington | Poor | 1948 | 78 | 377 |
| JOHNS CREEK | Washington | Fair | 1948 | 78 | 15,751 |
| COAL CREEK | Washington | Good | 1948 | 78 | 9,612 |
| WISEMAN CREEK | Washington | Good | 1948 | 78 | 9,612 |
| OVERFLOW CHANNEL NO 2 | Washington | Poor | 1948 | 78 | 10,027 |
| SMITH CREEK | Washington | Good | 1948 | 78 | 9,227 |
| SMITH CREEK | Washington | Good | 1948 | 78 | 9,227 |
| MCCAULEY CR | Washington | Good | 1948 | 78 | 9,227 |
| MCCAULEY CREEK | Washington | Good | 1948 | 78 | 8,427 |
| CANYON CREEK | Washington | Poor | 1948 | 78 | 207 |
| W FK HUMPTULIPS RIVER | Washington | Fair | 1948 | 78 | 150 |
| GALE CREEK | Washington | Good | 1948 | 78 | 50 |
| NORTH FORK ENTIAT RIVER | Washington | Fair | 1948 | 78 | 100 |
| TUCK CREEK | Washington | Fair | 1948 | 78 | 10,564 |
| DUVALL SLOUGH | Washington | Fair | 1948 | 78 | 10,564 |
| DUVALL SLOUGH | Washington | Fair | 1948 | 78 | 10,564 |
| DUVALL SLOUGH | Washington | Fair | 1948 | 78 | 10,564 |
| DRY CREEK | Washington | Fair | 1948 | 78 | 5,280 |
| OVERFLOW CHANNEL | Washington | Fair | 1948 | 78 | 13,497 |
| PILCHUCK R. | Washington | Fair | 1948 | 78 | 13,468 |
| CHILDS CREEK | Washington | Fair | 1948 | 78 | 525 |
| CHEHALIS RIVER | Washington | Poor | 1948 | 78 | 144 |
| MAGUIRE GULCH | Washington | Fair | 1948 | 78 | 412 |
| CHARLEY CREEK | Washington | Fair | 1948 | 78 | 20 |
| LATAH CREEK | Washington | Fair | 1948 | 78 | 563 |
| BUTLER SLOUGH | Washington | Poor | 1948 | 78 | 209 |
| TOPPENISH CREEK | Washington | Fair | 1948 | 78 | 140 |
| BN RR MAIN LINE | Washington | Fair | 1948 | 78 | 8,491 |
| RAVINE | Washington | Fair | 1948 | 78 | 160 |
| COAL CREEK | Washington | Good | 1948 | 78 | 518 |
| CAPITOL LAKE | Washington | Fair | 1948 | 78 | 19,640 |
| JIM CREEK | Washington | Fair | 1949 | 77 | 20 |
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.