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
SOUTH CREEK Washington Fair 1934 92 600
DAKOTA CR Washington Fair 1934 92 1,033
TEN MILE CR Washington Fair 1934 92 372
SLOUGH Washington Fair 1934 92 575
THOMAS CREEK Washington Poor 1934 92 5,234
BLACK SLOUGH Washington Fair 1934 92 80
NOOKSACK RIVER Washington Fair 1934 92 9,332
CARPENTER CREEK Washington Fair 1934 92 613
SWIFT CR Washington Fair 1934 92 1,443
FRIDAY CR Washington Fair 1934 92 851
LATAH CREEK Washington Fair 1934 92 1,833
STATE PARK ROAD/TRAIL Washington Good 1935 91 18,797
COLUMBIA RIVER Washington Fair 1935 91 4,923
ICICLE CREEK Washington Fair 1935 91 2
DECEPTION PASS Washington Fair 1935 91 18,797
CANOE PASS Washington Fair 1935 91 18,797
YAKIMA R Washington Fair 1935 91 9,615
SLOUGH OF YAKIMA R Washington Fair 1935 91 9,615
WYNOOCHEE RIVER Washington Poor 1935 91 21,466
METHOW RIVER Washington Fair 1935 91 1,578
QUARRY RD (ABANDONED) Washington Fair 1935 91 983
DUCK CREEK Washington Fair 1935 91 186
SYLVIA CREEK Washington Poor 1935 91 3,626
SWAMP CREEK Washington Fair 1935 91 18,981
SUMAS RIVER Washington Fair 1935 91 252
TEN MILE CR Washington Fair 1935 91 4,900
GRANGER CANAL Washington Fair 1935 91 140
NO NAME CREEK Washington Fair 1935 91 51
TOUTLE RIVER Washington Fair 1935 91 509
SWIFT CR Washington Fair 1935 91 2,340
MILL CREEK Washington Fair 1935 91 1,526
SLEASMAN SLOUGH Washington Fair 1935 91 150
ROCK CREEK Washington Fair 1935 91 17
NO NAME CREEK Washington Fair 1935 91 135
WEST FORK WOODS CREEK Washington Fair 1935 91 2,838
SCHMITZ BLVD RAVINE Washington Fair 1935 91 12,500
CHEWELAH CREEK Washington Poor 1935 91 300
CHEWELAH CREEK Washington Poor 1935 91 100
RAILROAD YARDS Washington Fair 1935 91 26,000
ARGO RR YARD Washington Fair 1935 91 19,000
RAVINE Washington Fair 1935 91 125,000
RAVINE Washington Fair 1935 91 3,000
SQUALICUM CREEK Washington Fair 1935 91 3,500
CREEK Washington Good 1936 90 1,719
HENDERSON BAY Washington Poor 1936 90 23,753
COOK CREEK Washington Fair 1936 90 1,999
BOULDER CR Washington Fair 1936 90 1,978
SP S RY Washington Fair 1936 90 3,619
BNRR Washington Poor 1936 90 6,180
BIG QUILCENE RIVER Washington Poor 1936 90 3,525

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.