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.

Clear
Bridge State Condition Year Built Age (Years) ADT
HATTON COULEE Washington Fair 1915 111 3
CLOQUALLUM CREEK Washington Fair 1915 111 1,380
DRY WASH Washington Fair 1915 111 1
S FORK PALOUSE RIVER Washington Fair 1915 111 2,034
PORTAGE BAY Washington Poor 1915 111 35,000
MILL CREEK Washington Fair 1915 111 10,563
DESCHUTES RIVER Washington Fair 1915 111 7,400
PATIT CREEK Washington Fair 1915 111 100
PATIT CREEK Washington Fair 1915 111 225
RATTLERS RUN CREEK Washington Good 1915 111 85
PILCHUCK CR Washington Fair 1916 110 63
TOUCHET RIVER Washington Poor 1916 110 416
COLUMBIA RIVER Washington Fair 1916 110 65,013
WILKESON CREEK Washington Fair 1916 110 3,288
FERN CREEK Washington Fair 1916 110 85
CRAB CREEK Washington Good 1916 110 30
CRAB CREEK Washington Fair 1916 110 103
WHISKEY CREEK Washington Fair 1916 110 170
CHIMACUM CREEK Washington Fair 1916 110 8,718
INTERMITTENT STREAM Washington Fair 1916 110 55
DRY WASH Washington Fair 1916 110 26
NINE MILE CANYON Washington Fair 1916 110 30
CON-NA-WAI CREEK Washington Fair 1916 110 23
HANGMAN CREEK Washington Fair 1916 110 406
PINE CREEK Washington Fair 1916 110 25
SLOUGH Washington Fair 1916 110 226
BAKER RIVER Washington Fair 1916 110 150
MILL CREEK Washington Poor 1916 110 1,970
YAKIMA RIVER Washington Fair 1917 109 17,681
WALLA WALLA R Washington Fair 1917 109 8,169
WOODWARD CANYON Washington Fair 1917 109 8,012
HALF MOON CREEK Washington Fair 1917 109 1,600
WEBER COULEE Washington Fair 1917 109 57
COAL CREEK Washington Fair 1917 109 35
COW CREEK Washington Fair 1917 109 62
REBEL FLAT CREEK Washington Fair 1917 109 430
GREEN CREEK Washington Fair 1917 109 178
HARRIS CREEK Washington Fair 1917 109 347
KENNEDY CREEK Washington Fair 1917 109 72
COAL CREEK Washington Fair 1917 109 50
COAL CREEK Washington Fair 1917 109 87
SUMAS RIVER Washington Fair 1917 109 220
DEARBORN ST Washington Fair 1917 109 22,000
SHIP CANAL Washington Fair 1917 109 60,000
SHIP CANAL Washington Fair 1917 109 29,300
SPOKANE RIVER Washington Good 1917 109 2,423
WILLAPA RIVER Washington Fair 1917 109 72
CHINA CRK Washington Fair 1918 108 5,822
WILKESON CREEK Washington Fair 1918 108 1,964
TRAP CREEK Washington Good 1918 108 1,825

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.