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
DRY CREEK Washington Fair 1921 105 429
SPRING VALLEY BRANCH Washington Good 1921 105 429
COLVILLE RIVER Washington Fair 1921 105 8,606
LACAMAS CREEK Washington Good 1921 105 10,107
MILL CREEK Washington Fair 1921 105 15,354
MILL CREEK Washington Fair 1921 105 9,066
CARBON RIVER Washington Poor 1921 105 270
PLEASANT VALLEY CREEK Washington Fair 1921 105 60
ENTIAT RIVER Washington Good 1921 105 5,957
MIDDLE FORK WILDCAT CREE Washington Poor 1921 105 1,325
WEST FORK WILDCAT CREEK Washington Fair 1921 105 2,267
BRANCH SILVER CREEK Washington Fair 1921 105 2
CLOQUALLUM CREEK Washington Fair 1921 105 1,863
WILDCAT CREEK Washington Fair 1921 105 1,863
WILDCAT CREEK Washington Fair 1921 105 1,863
SNOQUALMIE RIVER Washington Poor 1921 105 2,458
Cascade Creek Washington Fair 1921 105 1,607
ROCK CREEK Washington Fair 1921 105 1,907
COPPER CR Washington Fair 1922 104 2,249
SILVER CREEK Washington Fair 1922 104 1,454
OHOP SLOUGH Washington Fair 1922 104 2,780
OHOP SLOUGH Washington Fair 1922 104 2,780
JOE LEARY SLOUGH Washington Fair 1922 104 4,929
ST PARKS TRAIL (PLUVIUS) Washington Fair 1922 104 1,600
SLOUGH Washington Good 1922 104 30,762
MILL CREEK Washington Good 1922 104 30,762
BURLINGTON NORTHERN RR Washington Fair 1922 104 5,301
OWL CREEK Washington Poor 1922 104 6,500
PPL PIPELINES Washington Poor 1922 104 281
PORTAGE CREEK Washington Fair 1922 104 5,619
CALIFORNIA CR Washington Fair 1922 104 12
COLVILLE GULCH Washington Fair 1922 104 100
COTTONWOOD CREEK Washington Poor 1922 104 50
STALEY CREEK Washington Fair 1922 104 51
S FK NEWAUKUM RIVER Washington Fair 1922 104 27
NEWMAN CREEK Washington Poor 1922 104 2,194
SATSOP OVERFLOW CHANNEL Washington Poor 1922 104 1,900
MILL CREEK Washington Fair 1922 104 3,390
WHATCOM CREEK Washington Fair 1922 104 8,700
S FK PALOUSE RIVER Washington Poor 1923 103 9,381
OKANOGAN RIVER Washington Fair 1923 103 5,987
SALMON CREEK Washington Good 1923 103 1,640
CEDAR CREEK Washington Fair 1923 103 1,454
GOLDSBOROUGH CREEK Washington Fair 1923 103 17,285
CALIFORNIA CREEK Washington Fair 1923 103 411
HILL CREEK Washington Fair 1923 103 300
SALMON CREEK Washington Fair 1923 103 1,368
PESHASTIN CR Washington Fair 1923 103 440
YELLOWHAWK CREEK Washington Fair 1923 103 750
COULEE CREEK Washington Fair 1923 103 266

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.