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
BRANCH LACAMAS CR. Washington Good 1926 100 985
LACAMAS CR. Washington Good 1926 100 985
LACAMAS CR. Washington Good 1926 100 936
DRY HOLLOW Washington Poor 1926 100 24
NEWAUKUM OVERFLOW Washington Fair 1926 100 3,427
DRY CREEK Washington Fair 1926 100 9,304
BURNS CREEK Washington Fair 1926 100 1,847
LAUSSIER CR. Washington Fair 1926 100 932
GARRISON CR Washington Fair 1926 100 2,125
PARADISE RIVER Washington Fair 1926 100 1,800
EDITH CREEK Washington Fair 1926 100 500
PARADISE RIVER Washington Fair 1926 100 500
SAN POIL RIVER Washington Fair 1927 99 406
SNOHOMISH RIVER Washington Poor 1927 99 16,286
UNION SL Washington Poor 1927 99 16,439
STEAMBOAT SLOUGH Washington Poor 1927 99 16,592
CHINOOK R Washington Fair 1927 99 7,256
HYLEBOS CREEK Washington Fair 1927 99 23,907
SULLIVAN CREEK Washington Poor 1927 99 949
INDIAN CR Washington Fair 1927 99 3,200
INDIAN CREEK Washington Poor 1927 99 3,925
SNAKE RIVER Washington Poor 1927 99 485
S FK SNOQUALMIE RIVER Washington Fair 1927 99 50
STEILACOOM LAKE Washington Poor 1927 99 4,905
NEWAUKUM CREEK Washington Fair 1927 99 3,694
UNION PACIFIC RAILROAD Washington Fair 1927 99 20
NEWAUKUM CREEK Washington Fair 1927 99 520
COWICHE CREEK N. FORK Washington Good 1927 99 1,100
CLARKS CREEK Washington Good 1927 99 4,850
SOOS CREEK Washington Fair 1927 99 8,000
CON-NA-WAI CREEK Washington Fair 1927 99 30
STILLWATER CREEK Washington Fair 1927 99 78
DRY RELIEF Washington Fair 1927 99 21
RAVINE FAIRMOUNT AVE Washington Fair 1927 99 31,000
LATAH CREEK Washington Good 1927 99 82
PUGET GULCH N32 TO N 33S Washington Fair 1927 99 8,088
CHELAN RIVER Washington Fair 1927 99 3,024
SKOOKUMCHUCK RIVER Washington Poor 1928 98 8,908
HALL CREEK Washington Good 1928 98 2,655
HOQUIAM RIVER Washington Poor 1928 98 12,765
COAL CREEK Washington Fair 1928 98 18,069
HYAK CREEK Washington Fair 1928 98 823
ROCK CREEK Washington Fair 1928 98 1,600
WOODARD CREEK Washington Fair 1928 98 4,630
DAKOTA CR Washington Fair 1928 98 1,149
NEWAUKUM CREEK Washington Good 1928 98 1,750
NEWAUKUM CREEK Washington Fair 1928 98 4,723
OLEQUA CREEK Washington Fair 1928 98 1,662
RAILROAD Washington Poor 1928 98 13,700
ARGO RR Yard Washington Fair 1928 98 17,500

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.