US Bridges

I-15SB (SR-15) over Wildlife Underpass

Fair

Beaver County, Utah · 3.7MI.NO.MANDERFIELD Int. · Structure no. 3V2067

Built
2005
20 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
—
2023 count
Owner
State
State Highway Agency

About this bridge

I-15SB (SR-15) over Wildlife Underpass is a steel culvert carrying I-15SB (SR-15) over Wildlife Underpass in Beaver County, Utah. It was built in 2005, so it is 20 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.

No traffic count is recorded. The structure is 24 ft (7.3 m) long.

Location

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CarriesI-15SB (SR-15)
CrossesWildlife Underpass
Location3.7MI.NO.MANDERFIELD Int.
RouteInterstate 15
CountyBeaver County
StateUtah
Coordinates38.45685, -112.62301
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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-15SB (SR-15) over Wildlife Underpass built?

It was built in 2005, making it 20 years old in 2025.

What condition is I-15SB (SR-15) over Wildlife Underpass 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-15SB (SR-15) over Wildlife Underpass carry?

No traffic count is recorded for this structure.

How long is I-15SB (SR-15) over Wildlife Underpass?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m).

Who owns I-15SB (SR-15) over Wildlife Underpass?

It is owned by the State Highway Agency.