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
CHINA CREEK Washington Fair 1946 80 5
32ND AVE W RAVINE Washington Good 1946 80 2,300
MISSOURI FLAT CREEK Washington Fair 1946 80 14,901
EDGEWATER CREEK Washington Poor 1946 80 4,883
China Creek Washington Good 1946 80 10
CRAB CREEK SIPHON NO. 1 Washington Good 1947 79 10
East Low Canal - Crab Ck Washington Good 1947 79 5
East Low Canal - Crab Ck Washington Good 1947 79 5
East Low Canal - Crab Ck Washington Good 1947 79 5
East Low Canal - Brkn Rk Washington Good 1947 79 2
East Low Canal - Brkn Rk Washington Good 1947 79 1
COWEEMAN R Washington Good 1947 79 1,500
TYE RIVER Washington Good 1947 79 5,641
TYE RIVER Washington Good 1947 79 5,590
N FK DEEP CR LOWER X-ING Washington Good 1947 79 7,178
ABANDONED CASCADE RR Washington Poor 1947 79 1,512
YAKIMA RIVER Washington Fair 1947 79 2,678
SLOUGH & CNTY RD Washington Fair 1947 79 15,105
BIG CREEK Washington Fair 1947 79 2,503
SOUTH CREEK Washington Good 1947 79 9,080
WISER LAKE Washington Good 1947 79 8,009
ROCKY CREEK Washington Fair 1947 79 2,492
WENATCHEE RIVER Washington Fair 1947 79 8,705
RATTLESNAKE CREEK Washington Good 1947 79 3,793
CREEK Washington Poor 1947 79 2,879
BOULDER CREEK Washington Good 1947 79 1,139
BIRNIE SLOUGH Washington Fair 1947 79 906
TILTON RIVER Washington Fair 1947 79 2,232
DRY RUN Washington Good 1947 79 488
DRY RUN Washington Fair 1947 79 472
DRY RUN Washington Good 1947 79 472
DRY RUN Washington Good 1947 79 456
WILSON CR Washington Fair 1947 79 1,181
GHEER CREEK Washington Good 1947 79 4,376
BN RR Washington Fair 1947 79 15,105
SAMISH RIVER Washington Fair 1947 79 3,684
GRAYS RIVER Washington Fair 1947 79 450
CAVE CREEK Washington Fair 1947 79 2,042
CHERRY CREEK Washington Poor 1947 79 1,010
CHERRY CREEK Washington Fair 1947 79 1,561
TEN MILE CR Washington Fair 1947 79 841
EAST LOW CANAL Washington Fair 1947 79 317
SUMAS RIVER Washington Fair 1947 79 263
SUMAS RIVER Washington Fair 1947 79 291
MUCK CREEK Washington Fair 1947 79 4,450
ICICLE CREEK Washington Fair 1947 79 1,225
MILL CREEK Washington Poor 1947 79 948
WASHOUGAL RIVER Washington Fair 1947 79 9,924
SAMMAMISH RIVER Washington Good 1947 79 9,869
CHINA CREEK Washington Fair 1947 79 263

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.