Structure 23545 · Power County, ID

Barkdull RD over I 86 Eb-wb;coldwater Ic

Carries Barkdull RD over I 86 Eb-wb;coldwater Ic, 18.1 W. American Falls.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT265 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

265 ft end to end, longest span 131 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 box-beam bridge.

Built198145 years old
Length265.1 ft80.8 m
Daily traffic70counted 2023
Last inspectedMarch 2024every 48 months

Location

StateIdaho
CountyPower
Location18.1 W. American Falls
CarriesBarkdull RD
CrossesI 86 Eb-wb;coldwater Ic
Coordinates42.62069, -113.12133

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length265.1 ft (80.8 m)
Max Span130.9 ft (39.9 m)
Deck Width40.4 ft (12.3 m)
Deck Area993.8 sq m
Main Spans2
Year Built1981

Traffic

Avg Daily Traffic70 (2023)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000023545

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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