Structure 23131 · Bingham County, ID

Rose Road over I 15; Rose Road Ic

Carries Rose Road over I 15; Rose Road Ic, 5.2 N. Blackfoot.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT237 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

237 ft end to end, longest span 116 ft: about 3 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 tee-beam bridge.

Built20206 years old
Length236.9 ft72.2 m
Daily traffic1,300counted 2023
Last inspectedJune 2022every 48 months

Location

StateIdaho
CountyBingham
Location5.2 N. Blackfoot
CarriesRose Road
CrossesI 15; Rose Road Ic
Coordinates43.26178, -112.30958

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length236.9 ft (72.2 m)
Max Span116.1 ft (35.4 m)
Deck Width60.0 ft (18.3 m)
Deck Area1321.3 sq m
Main Spans2
Year Built2020

Traffic

Avg Daily Traffic1,300 (2023)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000023131

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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