Structure 2222A0000000 · Kittitas County, WA

SR 10 over Terrain

Carries SR 10 over Terrain, 2.0 E Jct SR 970.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT430 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

430 ft end to end, longest span 33 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.

Built1937rebuilt 2012
Length430.1 ft131.1 m
Daily traffic1,338counted 2023
Last inspectedJune 2023every 24 months

Location

StateWashington
CountyKittitas
Location2.0 E Jct SR 970
CarriesSR 10
CrossesTerrain
Coordinates47.16562, -120.81905

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length430.1 ft (131.1 m)
Max Span33.1 ft (10.1 m)
Deck Width31.8 ft (9.7 m)
Deck Area1271.7 sq m
Main Spans15
Year Built1937 (reconstructed 2012)

Traffic

Avg Daily Traffic1,338 (2023)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0002222A0000000

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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