Structure 27885 · Elmore County, ID

Canyon Creek Road over I 84;canyon Creek RD Gs

Carries Canyon Creek Road over I 84;canyon Creek RD Gs, 2.8 W. Mountain Home.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT269 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

269 ft end to end, longest span 106 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built197155 years old
Length269.0 ft82 m
Daily traffic1,600counted 2023
Last inspectedMarch 2022every 48 months

Location

StateIdaho
CountyElmore
Location2.8 W. Mountain Home
CarriesCanyon Creek Road
CrossesI 84;canyon Creek RD Gs
Coordinates43.16398, -115.70736

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length269.0 ft (82 m)
Max Span105.6 ft (32.2 m)
Deck Width33.1 ft (10.1 m)
Deck Area828.2 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic1,600 (2023)
Truck Traffic14%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000027885

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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