SR 520 over Peat Bog

Fair Condition33 years old32,900 vehicles/day

Location

StateWashington
CountyKing
Location0.2 E Jct I-405
CarriesSR 520
CrossesPeat Bog
Coordinates47.63183, -122.18386

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length193.9 ft (59.1 m)
Max Span65.9 ft (20.1 m)
Deck Width22.3 ft (6.8 m)
Deck Area401.9 sq m
Main Spans3
Year Built1993

Traffic

Avg Daily Traffic32,900 (2023)
Truck Traffic5%
Lanes On Bridge3

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0014039G0000000

Nearby Bridges

SR 520 over Pedestrian Trail 0.0 mi Fair N-e Ramp over Trail 0.0 mi Good SR 520 over Pedestrian Trail 0.0 mi Good Northup Way over Eastside Rail Corridor 0.1 mi Fair 405 N-e Ramp over 116th AVE NE 0.1 mi Good SR 520 over Northup Way 0.1 mi Good SR 520 over 116th AVE NE 0.1 mi Fair SR 520 over 116th AVE NE 0.1 mi Fair I-405 N-e Ramp over 116th AVE NE 0.1 mi Good SR 520 over 120th AVE NE 0.1 mi Fair