S-e Ramp I-405 over SR 520

Good Condition33 years old14,260 vehicles/day

Location

StateWashington
CountyKing
LocationJct SR 520
CarriesS-e Ramp I-405
CrossesSR 520
Coordinates47.63403, -122.18789

Condition Ratings

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

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length720.1 ft (219.5 m)
Max Span103.0 ft (31.4 m)
Deck Width30.8 ft (9.4 m)
Deck Area2063.3 sq m
Main Spans8
Year Built1993

Traffic

Avg Daily Traffic14,260 (2023)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge10

Inspection & Ownership

Last Inspection824
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0014039A0000000

Nearby Bridges

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