Structure 11536 · Bingham County, ID

I 15 over Riverside Canal

Carries I 15 over Riverside Canal, 4.8 N. Blackfoot.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

37 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.

Built20197 years old
Length37.1 ft11.3 m
Daily traffic26,000counted 2023
Last inspectedFebruary 2025every 48 months

Location

StateIdaho
CountyBingham
Location4.8 N. Blackfoot
CarriesI 15
CrossesRiverside Canal
Coordinates43.25675, -112.31314

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length37.1 ft (11.3 m)
Max Span37.1 ft (11.3 m)
Deck Width168.0 ft (51.2 m)
Deck Area578.6 sq m
Main Spans1
Year Built2019

Traffic

Avg Daily Traffic26,000 (2023)
Truck Traffic23%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000011536

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.

Nearby Bridges