Structure 83469000000000 · Kittitas County, WA

Robbins RD over Hiline Canal

Carries Robbins RD over Hiline Canal, 00.34 N Smithson RD.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
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
CAR · 15 FT55 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

55 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 channel-beam bridge.

Built1955rebuilt 1977
Length55.1 ft16.8 m
Daily traffic218counted 2022
Last inspectedOctober 2023every 24 months

Location

StateWashington
CountyKittitas
Location00.34 N Smithson RD
CarriesRobbins RD
CrossesHiline Canal
Coordinates47.10765, -120.56057

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length55.1 ft (16.8 m)
Max Span53.1 ft (16.2 m)
Deck Width29.9 ft (9.1 m)
Deck Area152.9 sq m
Main Spans1
Year Built1955 (reconstructed 1977)

Traffic

Avg Daily Traffic218 (2022)
Truck Traffic35%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number083469000000000

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