N-w Ramp over SR 520

Good Condition60 years old8,364 vehicles/day

Location

StateWashington
CountyKing
Location3.7 N Jct I-90
CarriesN-w Ramp
CrossesSR 520
Coordinates47.63292, -122.18994

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length259.8 ft (79.2 m)
Max Span74.1 ft (22.6 m)
Deck Width26.6 ft (8.1 m)
Deck Area641.5 sq m
Main Spans4
Year Built1966

Traffic

Avg Daily Traffic8,364 (2023)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge6

Inspection & Ownership

Last Inspection424
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number0007596F0000000

Nearby Bridges

I-405 over SR 520 0.1 mi Good E-n Ramp SR 520 over I-405 & SR 520 0.1 mi Good I-405 S-w Ramp over Northup Way 0.1 mi Good I-405 over Northup Way 0.1 mi Good I-405 over SR 520 0.1 mi Good I-405 over Northup Way 0.1 mi Good S-e Ramp I-405 over SR 520 0.1 mi Good SR 520 E-n Ramp over Northup Way 0.1 mi Good SR 520 W-n Ramp over Northup Way 0.1 mi Fair I-405 over 115th AVE NE & Trail 0.2 mi Good