Structure 1C 610 · Juab County, UT

I-15 NB over Deer Crossing

Carries I-15 NB over Deer Crossing, 2 Mi. S. Of Mona Int..

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

86 ft end to end, longest span 35 ft. 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 multi-beam bridge.

Built197452 years old
Length86.0 ft26.2 m
Daily traffic45,000counted 2023
Last inspectedMarch 2023every 24 months

Location

StateUtah
CountyJuab
Location2 Mi. S. Of Mona Int.
CarriesI-15 NB
CrossesDeer Crossing
Coordinates39.79278, -111.83833

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length86.0 ft (26.2 m)
Max Span35.4 ft (10.8 m)
Deck Width44.3 ft (13.5 m)
Deck Area353.7 sq m
Main Spans3
Year Built1974

Traffic

Avg Daily Traffic45,000 (2023)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1C 610

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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