US Bridges

I-15 (SR-15) Nbl over Deer Crossing

Fair

Juab County, Utah · 8.5 Mi.No. of Mona Intchg · Structure no. 1C 609

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
84 ft
3 main spans
Daily traffic
19,345
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over Deer Crossing is a steel continuous stringer/multi-beam or girder carrying I-15 (SR-15) Nbl over Deer Crossing in Juab County, Utah. It was built in 1973, so it is 52 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 19,345 vehicles a day, roughly 26% of them trucks, projected to reach 24,182 by 2034. The structure is 84 ft (25.5 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 (SR-15) Nbl
CrossesDeer Crossing
Location8.5 Mi.No. of Mona Intchg
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.93667, -111.81167
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length84 ft (25.5 m)
Longest span35 ft (10.8 m)
Deck width64 ft (19.5 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,345 (2014)
Projected traffic24,182 by 2034
Trucks26%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-15 (SR-15) Nbl over Deer Crossing built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-15 (SR-15) Nbl over Deer Crossing in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does I-15 (SR-15) Nbl over Deer Crossing carry?

About 19,345 vehicles per day (2014 count), of which roughly 26% are trucks.

How long is I-15 (SR-15) Nbl over Deer Crossing?

The structure is 84 ft (25.5 m) long with a longest span of 35 ft (10.8 m) and a deck 64 ft wide.

Who owns I-15 (SR-15) Nbl over Deer Crossing?

It is owned by the State Highway Agency.