Structure 40206000001140 · Valley County, ID

Six Ml.-rd.valley over Middle Fk Payette River

Carries Six Ml.-rd.valley over Middle Fk Payette River, 17 Mi N. Of Crouch Id.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
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 FT73 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

73 ft end to end, longest span 35 ft. 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 multi-beam bridge.

Built197551 years old
Length72.5 ft22.1 m
Daily traffic20counted 1990
Last inspectedAugust 2023every 24 months

Location

StateIdaho
CountyValley
Location17 Mi N. Of Crouch Id
CarriesSix Ml.-rd.valley
CrossesMiddle Fk Payette River
Coordinates44.30436, -115.86511

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length72.5 ft (22.1 m)
Max Span35.4 ft (10.8 m)
Deck Width18.0 ft (5.5 m)
Deck Area121.5 sq m
Main Spans2
Year Built1975

Traffic

Avg Daily Traffic20 (1990)
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number040206000001140

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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