Structure 16140 · Jerome County, ID

I 84 Wbl over J Coulee Canal

Carries I 84 Wbl over J Coulee Canal, 0.5 W. Jerome.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

32 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 tee-beam bridge.

Built195472 years old
Length32.2 ft9.8 m
Daily traffic12,500counted 2023
Last inspectedMarch 2023every 48 months

Location

StateIdaho
CountyJerome
Location0.5 W. Jerome
CarriesI 84 Wbl
CrossesJ Coulee Canal
Coordinates42.72851, -114.55315

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length32.2 ft (9.8 m)
Max Span29.9 ft (9.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area119.6 sq m
Main Spans1
Year Built1954

Traffic

Avg Daily Traffic12,500 (2023)
Truck Traffic29%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000016140

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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