SR 529 over Steamboat Slough

Poor Condition99 years old16,592 vehicles/day

Location

StateWashington
CountySnohomish
Location6.2 N Jct SR 529 Spur
CarriesSR 529
CrossesSteamboat Slough
Coordinates48.03485, -122.18274

Condition Ratings

Overall ConditionPoor
Deck6 (Satisfactory)
Superstructure4 (Poor)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical3 — Scour critical

Physical Characteristics

MaterialSteel
DesignMovable - Swing
Total Length853.0 ft (260 m)
Max Span180.1 ft (54.9 m)
Deck Width25.3 ft (7.7 m)
Deck Area2,002 sq m
Main Spans2
Year Built1927 (reconstructed 2003)

Traffic

Avg Daily Traffic16,592 (2023)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure Number0000965C0000000

Nearby Bridges

SR 529 over Steamboat Slough 0.1 mi Fair I-5 over Steamboat Slough 0.2 mi Fair I-5 over Steamboat Slough 0.2 mi Fair SR 529 over Union Sl 0.3 mi Poor SR 529 over Union Sl 0.3 mi Poor I-5 over SR 529 NB Ramp 0.4 mi Fair I-5 over SR 529 NB Ramp 0.4 mi Fair I-5 over Sr529 Rr Ebey Sl 60th Pl 0.6 mi Fair I-5 over Ebey Sl / SR 529 / Rr 0.6 mi Fair SR 529 over Ebey Slough 0.7 mi Good