I-5 over Duwamish R Rr City ST

Fair Condition62 years old95,981 vehicles/day

Location

StateWashington
CountyKing
Location0.4 N Jct SR 599
CarriesI-5
CrossesDuwamish R Rr City ST
Coordinates47.48694, -122.26657

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure5 (Fair)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length812.0 ft (247.5 m)
Max Span274.9 ft (83.8 m)
Deck Width69.9 ft (21.3 m)
Deck Area5271.8 sq m
Main Spans2
Year Built1964 (reconstructed 1996)

Traffic

Avg Daily Traffic95,981 (2023)
Truck Traffic7%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0007171B0000000

Nearby Bridges