Structure 3F 363S · Beaver County, UT

I-15 (sr-15) Sbl over Deer Crossing

Carries I-15 (sr-15) Sbl over Deer Crossing, 7.9 Mi.no.bear Valley 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 FT75 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

75 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 multi-beam bridge.

Built1984rebuilt 2015
Length75.1 ft22.9 m
Daily traffic25,503counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateUtah
CountyBeaver
Location7.9 Mi.no.bear Valley Int
CarriesI-15 (sr-15) Sbl
CrossesDeer Crossing
Coordinates38.17124, -112.62320

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length75.1 ft (22.9 m)
Max Span72.5 ft (22.1 m)
Deck Width62.7 ft (19.1 m)
Deck Area437.4 sq m
Main Spans1
Year Built1984 (reconstructed 2015)

Traffic

Avg Daily Traffic25,503 (2023)
Truck Traffic32%
Lanes On Bridge3

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number3F 363S

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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