SR 520 E-n Ramp over Northup Way

Good Condition33 years old8,411 vehicles/day

Location

StateWashington
CountyKing
LocationJct I-405
CarriesSR 520 E-n Ramp
CrossesNorthup Way
Coordinates47.63317, -122.18708

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length162.1 ft (49.4 m)
Max Span64.0 ft (19.5 m)
Deck Width28.9 ft (8.8 m)
Deck Area434.7 sq m
Main Spans3
Year Built1993

Traffic

Avg Daily Traffic8,411 (2023)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0014039D0000000

Nearby Bridges

SR 520 W-n Ramp over Northup Way 0.0 mi Fair I-405 over Northup Way 0.0 mi Good I-405 over Northup Way 0.0 mi Good SR 520 E-n Ramp over 115th AVE NE & Trail 0.1 mi Fair S-e Ramp I-405 over SR 520 0.1 mi Good I-405 S-w Ramp over Northup Way 0.1 mi Good I-405 over 115th AVE NE & Trail 0.1 mi Good SR 520 over 116th AVE NE 0.1 mi Fair I-405 over SR 520 0.1 mi Good I-405 over SR 520 0.1 mi Good