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
SLOUGH Washington Good 1945 81 10,445
SLOUGH Washington Good 1945 81 10,445
DRAINAGE CHANNEL Washington Good 1945 81 2,967
OVERFLOW CHANNEL Washington Good 1945 81 3,728
JOHNSON CR Washington Good 1945 81 798
KUSSHI CR Washington Poor 1945 81 4,013
GALENA CREEK Washington Good 1945 81 636
RAZORHONE CREEK Washington Good 1945 81 623
JACKMAN CREEK Washington Good 1945 81 2,998
OLEQUA CR Washington Fair 1945 81 2,472
SR 166 Washington Fair 1945 81 5,187
NISQUALLY R OVERFLOW Washington Good 1945 81 2,872
H W CHANNEL METHOW R Washington Good 1945 81 4,775
BNRR Washington Fair 1945 81 32,504
G.W.R.D. IRRIGATION CANA Washington Fair 1945 81 543
ROCK CREEK Washington Fair 1945 81 43
CLOQUALLUM CREEK Washington Good 1945 81 150
HUTCHINSON CR Washington Fair 1945 81 389
BARNES CREEK Washington Fair 1945 81 50
WEST CANAL Washington Good 1946 80 5
WEST CANAL Washington Good 1946 80 5
WEST CANAL Washington Good 1946 80 5
BAGLEY CREEK Washington Poor 1946 80 636
RAZORHONE CREEK Washington Good 1946 80 636
GALENA CREEK Washington Fair 1946 80 623
CINEBAR CREEK Washington Good 1946 80 1,200
BAUER COULEE Washington Poor 1946 80 301
TACOMA CR Washington Poor 1946 80 1,202
CEDAR CREEK Washington Fair 1946 80 1,960
SMITH CREEK Washington Good 1946 80 3,728
H W CHANNEL METHOW R Washington Good 1946 80 4,775
DRY WASH Washington Fair 1946 80 2,250
DRAIN Washington Fair 1946 80 2,250
N FK CLEAR CREEK Washington Good 1946 80 1,916
LAKE CREEK Washington Fair 1946 80 3,805
COTTONWOOD CREEK Washington Good 1946 80 705
ROCK CREEK Washington Poor 1946 80 269
IMBLER CREEK Washington Poor 1946 80 269
DRAINAGE CHANNEL Washington Good 1946 80 9,478
DEER CREEK Washington Good 1946 80 13,456
CHERRY CREEK Washington Poor 1946 80 10,445
COAL CREEK Washington Fair 1946 80 5,312
IMBLER CREEK Washington Fair 1946 80 40
TEN MILE CR Washington Fair 1946 80 68
WILKESON CREEK Washington Fair 1946 80 550
TACOMA EASTERN RAILROAD Washington Fair 1946 80 2,900
TACOMA RAIL MNT. DIV. Washington Good 1946 80 2,725
SMITH CREEK OVERFLOW Washington Fair 1946 80 1,112
CHAMBERS CREEK Washington Fair 1946 80 7,275
SAAR CR Washington Fair 1946 80 206

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.