Structure 19670 · Owyhee County, ID

Stc3710;summer Cmp over Squaw Creek

Carries Stc3710;summer Cmp over Squaw Creek, 6.75 SW Marsing.

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
20 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

20 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 rigid-frame bridge.

Built198838 years old
Length20.0 ft6.1 m
Daily traffic100counted 2023
Last inspectedFebruary 2021every 48 months

Location

StateIdaho
CountyOwyhee
Location6.75 SW Marsing
CarriesStc3710;summer Cmp
CrossesSquaw Creek
Coordinates43.44720, -116.82851

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length20.0 ft (6.1 m)
Max Span20.0 ft (6.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area74.4 sq m
Main Spans1
Year Built1988

Traffic

Avg Daily Traffic100 (2023)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2021
Inspection FrequencyEvery 48 months
OwnerOther Local Agencies
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000019670

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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