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
PALOUSE RIVER Washington Fair 1941 85 53
CHINA CREEK Washington Fair 1941 85 1,362
CHINA CREEK Washington Fair 1941 85 209
CHINA CREEK Washington Fair 1941 85 272
CHINA CREEK Washington Fair 1941 85 154
CHINA CREEK Washington Fair 1941 85 318
CHINA CREEK Washington Fair 1941 85 149
E MARGINAL WY 1ST 4TH Washington Fair 1941 85 42,350
RIBARY CREEK Washington Fair 1941 85 6,500
S FORK SNOQUALMIE RIVER Washington Fair 1941 85 6,500
GARDINERS CREEK Washington Fair 1941 85 6,500
STETATTLE CREEK Washington Fair 1941 85 300
China Creek Washington Good 1941 85 1,504
China Creek Washington Fair 1941 85 1,504
SOUTH CREEK TRIBUTARY Washington Fair 1942 84 250
DRY CREEK Washington Fair 1942 84 186
CRAB CREEK Washington Fair 1942 84 51
CHINA CREEK Washington Fair 1942 84 1,394
BNSF RAILROAD Washington Fair 1942 84 1,000
DESCHUTES RIVER Washington Fair 1943 83 5,190
WASTEWATER CANAL NO 5 Washington Good 1943 83 3,426
WASTEWATER CANAL NO 5 Washington Good 1943 83 3,426
SUMAS RIVER Washington Fair 1943 83 1,272
PYSHT RIVER Washington Fair 1944 82 829
ABANDONED RAILROAD Washington Poor 1944 82 2,625
CHILIWIST CREEK Washington Fair 1944 82 1,415
TOWN DITCH Washington Fair 1944 82 336
PALOUSE RIVER OVERRUN Washington Good 1944 82 96
GEIGER BOULEVARD Washington Fair 1944 82 2,964
JOHNSON CR Washington Good 1944 82 10
CHINA CREEK Washington Fair 1944 82 113
CHINA CREEK Washington Fair 1944 82 4,336
DRAIN DITCH Washington Poor 1944 82 2,350
CREEK Washington Fair 1945 81 7,813
HARRIS CREEK Washington Fair 1945 81 9,800
JIM CREEK Washington Poor 1945 81 1,969
STAFFORD CR Washington Fair 1945 81 6,124
INDIAN CREEK Washington Fair 1945 81 6,124
CAMPBELL CREEK Washington Fair 1945 81 6,124
SLOUGH Washington Fair 1945 81 7,813
SLOUGH Washington Poor 1945 81 7,813
SLOUGH Washington Fair 1945 81 7,813
SLOUGH Washington Fair 1945 81 7,813
SLOUGH Washington Fair 1945 81 7,813
SLOUGH Washington Fair 1945 81 7,813
SLOUGH Washington Poor 1945 81 7,813
SLOUGH Washington Fair 1945 81 7,813
GRIFFIN CR Washington Fair 1945 81 7,813
SLOUGH Washington Fair 1945 81 10,445
SLOUGH Washington Fair 1945 81 10,190

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.