Structure 88521000000000 · King County, WA

292nd AVE SE over Patterson Creek

Carries 292nd AVE SE over Patterson Creek, .03 Mi S Of Sr-202.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT69 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

69 ft end to end. Lengths and the car 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 slab bridge.

Built201214 years old
Length69.2 ft21.1 m
Daily traffic7,269counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateWashington
CountyKing
Location.03 Mi S Of Sr-202
Carries292nd AVE SE
CrossesPatterson Creek
Coordinates47.58775, -121.95339

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length69.2 ft (21.1 m)
Max Span65.0 ft (19.8 m)
Deck Width41.0 ft (12.5 m)
Deck Area263.8 sq m
Main Spans1
Year Built2012

Traffic

Avg Daily Traffic7,269 (2020)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number088521000000000

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.

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