I-405-SR 520 Nbcd over I-405 N-e & N-w Ramps

Good Condition15 years old9,875 vehicles/day

Location

StateWashington
CountyKing
Location3.1 N Jct I-90
CarriesI-405-SR 520 Nbcd
CrossesI-405 N-e & N-w Ramps
Coordinates47.62333, -122.18821

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length440.0 ft (134.1 m)
Max Span138.1 ft (42.1 m)
Deck Width26.9 ft (8.2 m)
Deck Area1099.6 sq m
Main Spans4
Year Built2011

Traffic

Avg Daily Traffic9,875 (2023)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0017726G0000000

Nearby Bridges

NE 12 ST over I-405 0.1 mi Good NE Spring BLVD over Stormwater Facility 0.2 mi Good NE 12th ST over Bnrr 0.3 mi Fair N-e Ramp over Cd Ramp And Terrain 0.3 mi Good NE Spring BLVD over Sound Transit Light Rail 0.3 mi Good NE 10th Street over I-405 0.3 mi Good NE Spring BLVD over Sound Transit Light Rail 0.3 mi Good 120th AVE NE over Stormwater Facility 0.4 mi Good 120th AVE NE over Sound Transit Light Rail 0.4 mi Good NE 8th ST over I-405 0.4 mi Good