Structure 267A0000000 · Kittitas County, WA

I-90 over Yakima River

Carries I-90 over Yakima River, 24.1 E Jct SR 906.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT206 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

206 ft end to end, longest span 100 ft: about 3 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 deck arch.

Built1917rebuilt 1930
Length206.0 ft62.8 m
Daily traffic17,681counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateWashington
CountyKittitas
Location24.1 E Jct SR 906
CarriesI-90
CrossesYakima River
Coordinates47.18619, -121.04361

Physical Characteristics

MaterialConcrete Continuous
DesignArch - Deck
Total Length206.0 ft (62.8 m)
Max Span100.1 ft (30.5 m)
Deck Width43.0 ft (13.1 m)
Deck Area822.7 sq m
Main Spans2
Year Built1917 (reconstructed 1930)

Traffic

Avg Daily Traffic17,681 (2023)
Truck Traffic23%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0000267A0000000

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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