Diablo Dam Access over Skagit River

Fair Condition96 years old220 vehicles/day

Location

StateWashington
CountyKing
LocationDiablo Dam
CarriesDiablo Dam Access
CrossesSkagit River
Coordinates48.71457, -121.13207

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical9 — Foundation above flood level

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length299.9 ft (91.4 m)
Max Span22.0 ft (6.7 m)
Deck Width19.0 ft (5.8 m)
Deck Area530.1 sq m
Main Spans11
Year Built1930

Traffic

Avg Daily Traffic220 (2022)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last Inspection822
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Structure Number087473000000000

Nearby Bridges

Diablo Dam Access over Skagit River 0.1 mi Fair Diablo Access Road over Skagit River 0.1 mi Fair Diablo Dam RD over Diablo Gorge 0.2 mi Fair Diablo Access RD over Diablo Gorge 0.2 mi Fair Diablo Camp Road over Diablo Tailrace 0.5 mi Fair Diablo ST over Stetattle Creek 0.8 mi Fair SR 20 over Skagit R 1.2 mi Good SR 20 over Colonial Creek 2.1 mi Good SR 20 over Sidehill 2.1 mi Good SR 20 over Thunder Arm Bay 2.3 mi Fair