Structure 13266 · Bonneville County, ID

US 26 over Anderson Canal

Carries US 26 over Anderson Canal, 14 NE Idaho 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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

40 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 rigid-frame bridge.

Built201016 years old
Length40.0 ft12.2 m
Daily traffic7,400counted 2023
Last inspectedMarch 2024every 48 months

Location

StateIdaho
CountyBonneville
Location14 NE Idaho Falls
CarriesUS 26
CrossesAnderson Canal
Coordinates43.60744, -111.83553

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length40.0 ft (12.2 m)
Max Span40.0 ft (12.2 m)
Deck Width82.0 ft (25 m)
Deck Area305 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic7,400 (2023)
Truck Traffic8%
Lanes On Bridge5

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000013266

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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