US Bridges

I-15 NB over Wildlife Crossing

Fair

Millard County, Utah · I-15 over Wildlife Cross. · Structure no. 1E2755

Built
2021
4 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
20,000
2019 count
Owner
State
State Highway Agency

About this bridge

I-15 NB over Wildlife Crossing is a concrete culvert carrying I-15 NB over Wildlife Crossing in Millard County, Utah. It was built in 2021, so it is 4 years old, younger 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 20,000 vehicles a day, roughly 38% of them trucks, projected to reach 25,000 by 2039. The structure is 26 ft (7.9 m) long and 72 ft wide.

Location

Open in Google Maps
CarriesI-15 NB
CrossesWildlife Crossing
LocationI-15 over Wildlife Cross.
RouteInterstate 15
CountyMillard County
StateUtah
Coordinates38.72914, -112.59204
Functional classRural 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
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 rating107.1 US tons
Inventory rating103.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width72 ft (21.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20,000 (2019)
Projected traffic25,000 by 2039
Trucks38%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemYes

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 NB over Wildlife Crossing built?

It was built in 2021, making it 4 years old in 2025.

What condition is I-15 NB over Wildlife 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 February 2023.

How much traffic does I-15 NB over Wildlife Crossing carry?

About 20,000 vehicles per day (2019 count), of which roughly 38% are trucks.

How long is I-15 NB over Wildlife Crossing?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 72 ft wide.

Who owns I-15 NB over Wildlife Crossing?

It is owned by the State Highway Agency.