Structure 3317A0000000 · Kittitas County, WA

SR 821 over Wilson CR

Carries SR 821 over Wilson CR, 20.2 N Yakima Co.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT88 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

88 ft end to end, longest span 56 ft. 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 tee-beam bridge.

Built194779 years old
Length87.9 ft26.8 m
Daily traffic1,181counted 2023
Last inspectedAugust 2024every 24 months

Location

StateWashington
CountyKittitas
Location20.2 N Yakima Co
CarriesSR 821
CrossesWilson CR
Coordinates46.92619, -120.50156

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length87.9 ft (26.8 m)
Max Span56.1 ft (17.1 m)
Deck Width27.9 ft (8.5 m)
Deck Area227.8 sq m
Main Spans3
Year Built1947

Traffic

Avg Daily Traffic1,181 (2023)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0003317A0000000

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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