Structure 81291000000000 · Whitman County, WA

Little/9170 over Union Flat Creek

Carries Little/9170 over Union Flat Creek, 3.10 Mi SW SR 195.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

100 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 tee-beam bridge.

Built198046 years old
Length100.1 ft30.5 m
Daily traffic10counted 2021
Last inspectedJanuary 2025every 24 months

Location

StateWashington
CountyWhitman
Location3.10 Mi SW SR 195
CarriesLittle/9170
CrossesUnion Flat Creek
Coordinates46.62028, -117.23005

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length100.1 ft (30.5 m)
Max Span98.4 ft (30 m)
Deck Width25.6 ft (7.8 m)
Deck Area237.9 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic10 (2021)
Truck Traffic40%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number081291000000000

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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