Structure 10765 · Power County, ID

I 86 Ebl over Sunbeam Road Gs

Carries I 86 Ebl over Sunbeam Road Gs, At American Falls.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT108 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

108 ft end to end, longest span 36 ft. 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.

Built195967 years old
Length107.9 ft32.9 m
Daily traffic4,350counted 2023
Last inspectedMay 2024every 48 months

Location

StateIdaho
CountyPower
LocationAt American Falls
CarriesI 86 Ebl
CrossesSunbeam Road Gs
Coordinates42.77654, -112.84891

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length107.9 ft (32.9 m)
Max Span36.1 ft (11 m)
Deck Width40.0 ft (12.2 m)
Deck Area401.4 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic4,350 (2023)
Truck Traffic19%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000010765

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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