Structure 32351 · Jefferson County, ID

N 175 E RD over Eagle Rock Cnl Headgate

Carries N 175 E RD over Eagle Rock Cnl Headgate, 0.2 S. 4.4 E. Ririe.

Overall conditionFair

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

How ratings work
Culvertsets 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 FT38 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 38 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built199729 years old
Length38.1 ft11.6 m
Daily traffic40counted 2023
Last inspectedMarch 2023every 48 months

Location

StateIdaho
CountyJefferson
Location0.2 S. 4.4 E. Ririe
CarriesN 175 E RD
CrossesEagle Rock Cnl Headgate
Coordinates43.62833, -111.68578

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length38.1 ft (11.6 m)
Max Span19.0 ft (5.8 m)
Deck Width35.1 ft (10.7 m)
Deck Area124.1 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic40 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 48 months
OwnerPrivate
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000032351

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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