Structure 21140 · Bonneville County, ID

Stc 6851; S 1st E over Sand Creek

Carries Stc 6851; S 1st E over Sand Creek, 2.5 N. Taylor.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 6/9 · sets the rating

42 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.

Built196264 years old
Length42.0 ft12.8 m
Daily traffic1,300counted 2023
Last inspectedNovember 2024every 24 months

Location

StateIdaho
CountyBonneville
Location2.5 N. Taylor
CarriesStc 6851; S 1st E
CrossesSand Creek
Coordinates43.41789, -112.03369

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length42.0 ft (12.8 m)
Max Span40.0 ft (12.2 m)
Deck Width30.2 ft (9.2 m)
Deck Area117.8 sq m
Main Spans1
Year Built1962

Traffic

Avg Daily Traffic1,300 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalUnknown
Structure Number000000000021140

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