Structure 28970 · Washington County, ID

Sand Road over Galloway Canal

Carries Sand Road over Galloway Canal, 0.3 S. 3.1 E. Weiser.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure9/9 · Excellent
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 9/9Substructure 6/9 · sets the rating

27 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.

Built1930rebuilt 2012
Length26.9 ft8.2 m
Daily traffic50counted 2023
Last inspectedNovember 2024every 48 months

Location

StateIdaho
CountyWashington
Location0.3 S. 3.1 E. Weiser
CarriesSand Road
CrossesGalloway Canal
Coordinates44.24158, -116.90666

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length26.9 ft (8.2 m)
Max Span24.9 ft (7.6 m)
Deck Width16.1 ft (4.9 m)
Deck Area40.2 sq m
Main Spans1
Year Built1930 (reconstructed 2012)

Traffic

Avg Daily Traffic50 (2023)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000000000028970

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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