Structure 14444B0000000 · King County, WA

SR 520 over SR 202 & Bike Path

Carries SR 520 over SR 202 & Bike Path, 5.8 E Jct I-405.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT463 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

463 ft end to end, longest span 98 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1995rebuilt 2010
Length462.9 ft141.1 m
Daily traffic19,104counted 2023
Last inspectedJanuary 2024every 24 months

Location

StateWashington
CountyKing
Location5.8 E Jct I-405
CarriesSR 520
CrossesSR 202 & Bike Path
Coordinates47.66886, -122.10794

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length462.9 ft (141.1 m)
Max Span98.1 ft (29.9 m)
Deck Width104.7 ft (31.9 m)
Deck Area4501.1 sq m
Main Spans5
Year Built1995 (reconstructed 2010)

Traffic

Avg Daily Traffic19,104 (2023)
Truck Traffic3%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number0014444B0000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges