Structure 31886 · Fremont County, ID

N 2400 E over St. Anthony Canal

Carries N 2400 E over St. Anthony Canal, 1.2 N. 0.2 E. St. Anthony.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

33 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
Length33.1 ft10.1 m
Daily traffic360counted 2023
Last inspectedNovember 2022every 48 months

Location

StateIdaho
CountyFremont
Location1.2 N. 0.2 E. St. Anthony
CarriesN 2400 E
CrossesSt. Anthony Canal
Coordinates43.97806, -111.67786

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length33.1 ft (10.1 m)
Max Span33.1 ft (10.1 m)
Deck Width38.7 ft (11.8 m)
Deck Area119.2 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic360 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000031886

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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