Structure 18040 · Owyhee County, ID

US 95 over B Line Canal

Carries US 95 over B Line Canal, 6.8 S. Homedale Scl.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 24 ft across. 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, so those are drawn as typical for a culvert.

Built198244 years old
Length24.0 ft7.3 m
Daily traffic3,600counted 2023
Last inspectedJanuary 2025every 48 months

Location

StateIdaho
CountyOwyhee
Location6.8 S. Homedale Scl
CarriesUS 95
CrossesB Line Canal
Coordinates43.54528, -116.86222

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length24.0 ft (7.3 m)
Max Span24.0 ft (7.3 m)
Deck Width165.0 ft (50.3 m)
Deck Area367.2 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic3,600 (2023)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000018040

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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