Structure 89013000000000 · Whitman County, WA

Huntley/6220 over Frog Creek

Carries Huntley/6220 over Frog Creek, 4.52 Mi SW Endicott.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

30 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 slab bridge.

Built20188 years old
Length29.9 ft9.1 m
Daily traffic3counted 2020
Last inspectedOctober 2024every 12 months

Location

StateWashington
CountyWhitman
Location4.52 Mi SW Endicott
CarriesHuntley/6220
CrossesFrog Creek
Coordinates46.85837, -117.52907

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width27.9 ft (8.5 m)
Deck Area77.3 sq m
Main Spans1
Year Built2018

Traffic

Avg Daily Traffic3 (2020)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical9 — Foundation above flood level
Structure Number089013000000000

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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