Structure 40204000001078 · Valley County, ID

Lunch Ck. Flat Rd. over Lunch Creek

Carries Lunch Ck. Flat Rd. over Lunch Creek, 2 Mi NW Landmark Airstrip.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

34 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 multi-beam bridge.

Built198046 years old
Length34.1 ft10.4 m
Daily traffic5counted 2018
Last inspectedOctober 2024every 24 months

Location

StateIdaho
CountyValley
Location2 Mi NW Landmark Airstrip
CarriesLunch Ck. Flat Rd.
CrossesLunch Creek
Coordinates44.67648, -115.56969

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length34.1 ft (10.4 m)
Max Span33.1 ft (10.1 m)
Deck Width15.4 ft (4.7 m)
Deck Area48.9 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic5 (2018)
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number040204000001078

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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