SR 203 over Slough

Fair Condition81 years old10,445 vehicles/day

Location

StateWashington
CountyKing
Location15.8 N Jct SR 202
CarriesSR 203
CrossesSlough
Coordinates47.75225, -121.98311

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length51.8 ft (15.8 m)
Max Span17.1 ft (5.2 m)
Deck Width38.7 ft (11.8 m)
Deck Area186.4 sq m
Main Spans3
Year Built1945

Traffic

Avg Daily Traffic10,445 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0002999K0000000

Nearby Bridges