SR 520 over Lake Washington

Good Condition9 years old19,472 vehicles/day

Location

StateWashington
CountyKing
Location0.7 E Jct SR 513
CarriesSR 520
CrossesLake Washington
Coordinates47.64518, -122.29929

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignStringer/Multi-beam
Total Length5967.8 ft (1,819 m)
Max Span160.1 ft (48.8 m)
Deck Width78.4 ft (23.9 m)
Deck Area43474.1 sq m
Main Spans41
Year Built2017

Traffic

Avg Daily Traffic19,472 (2023)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last Inspection823
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0018625A0000000

Nearby Bridges

SR 520 over Lake Washington 0.0 mi Good SR 513 over Pedestrian Trail 0.2 mi Good SR 520 Ramp over Portage Bay 0.3 mi Fair SR 513 over Montlake Cut 0.3 mi Fair E Boston Terrace over Ravine 0.8 mi Fair E Interlaken BLVD over 26th AVE E 0.8 mi Fair SR 520 over Portage Bay 0.9 mi Fair Delmar Drive over SR 520 0.9 mi Good 10th AVE over SR 520 1.0 mi Fair I-5 over Lake Wash Ship Canal 1.1 mi Fair