Structure 11310 · Bannock County, ID

I 15 Sbl over Private Rd.;machine Pass

Carries I 15 Sbl over Private Rd.;machine Pass, 6.9 N. Pocatello.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built195967 years old
Length24.0 ft7.3 m
Daily traffic14,250counted 2023
Last inspectedMay 2022every 48 months

Location

StateIdaho
CountyBannock
Location6.9 N. Pocatello
CarriesI 15 Sbl
CrossesPrivate Rd.;machine Pass
Coordinates42.97125, -112.42538

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length24.0 ft (7.3 m)
Max Span24.0 ft (7.3 m)
Deck Width47.9 ft (14.6 m)
Deck Area106.6 sq m
Main Spans1
Year Built1959

Traffic

Avg Daily Traffic14,250 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000011310

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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