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
DAKOTA CR Washington Fair 1930 96 189
WENATCHEE RIVER Washington Fair 1930 96 1,857
PINE CREEK Washington Good 1930 96 521
CEDAR CREEK Washington Fair 1930 96 1,173
SKAGIT RIVER Washington Fair 1930 96 608
S.V.I.D. CANAL Washington Fair 1930 96 9,199
THORN CREEK Washington Fair 1930 96 130
CURRIER CREEK Washington Poor 1930 96 449
CURRIER CREEK Washington Fair 1930 96 2,216
SVID CANAL Washington Fair 1930 96 3,360
SAUK RIVER Washington Fair 1930 96 158
CASCADE CANAL Washington Fair 1930 96 2,578
LITTLE WASHOUGAL RIVER Washington Fair 1930 96 1,830
EAST FORK HOQUIAM RIVER Washington Fair 1930 96 95
NORTH FORK Washington Fair 1930 96 800
HILINE CANAL Washington Fair 1930 96 1,028
CHEHALIS RIVER Washington Fair 1930 96 921
S FORK PALOUSE RIVER Washington Fair 1930 96 2,554
NPRR &SO TACOMA WAY Washington Fair 1930 96 10,550
NE PACIFIC ST Washington Fair 1930 96 35,000
NE 40TH ST BURKE GILMAN Washington Fair 1930 96 37,000
PORTAGE BAY PL E Washington Poor 1930 96 36,000
COTTONWOOD CREEK Washington Poor 1930 96 200
PAHA DRAINAGE DITCH Washington Fair 1930 96 846
BURLINGTON NORTHERN Washington Fair 1930 96 6,000
DRAINAGE Washington Good 1930 96 65
SPRING VALLEY CREEK Washington Fair 1930 96 506
SKAGIT RIVER Washington Fair 1930 96 220
SKAGIT RIVER Washington Fair 1930 96 250
SKAGIT RIVER Washington Fair 1930 96 220
BNRR Washington Fair 1930 96 20,000
WHITE RIVER Washington Fair 1930 96 1,786
KLICKITAT CREEK Washington Fair 1930 96 1,786
BRADEN CREEK Washington Good 1931 95 1,151
LAKE UNION Washington Fair 1931 95 61,259
HOH RIVER Washington Fair 1931 95 1,438
SNOQUALMIE RIVER Washington Poor 1931 95 9,740
JONES CREEK Washington Good 1931 95 2,524
HALF BRIDGE Washington Fair 1931 95 2,173
HORSETHIEF CANYON Washington Good 1931 95 2,173
N FK NOOKSACK R WARNICK Washington Fair 1931 95 1,951
CORNELL CREEK Washington Poor 1931 95 1,951
GN RY COLONY CREEK Washington Fair 1931 95 2,472
TOUCHET RIVER Washington Fair 1931 95 5,054
SAN POIL R Washington Poor 1931 95 705
SAN POIL RIVER Washington Poor 1931 95 193
WANITY SLOUGH Washington Fair 1931 95 5,901
TILTON RIVER Washington Poor 1931 95 2,351
PALOUSE RIVER Washington Fair 1931 95 6,729
CHEHALIS R Washington Fair 1931 95 1,846

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.