US Bridges

I-15 (SR-15)NB&SB over Cove Creek

Fair

Millard County, Utah · 1.9 Mi.No.Cove Fort Int. · Structure no. 0E1376

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
18,137
2017 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15)NB&SB over Cove Creek is a concrete continuous culvert carrying I-15 (SR-15)NB&SB over Cove Creek in Millard County, Utah. It was built in 1964, so it is 61 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 5 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 18,137 vehicles a day, roughly 32% of them trucks, projected to reach 21,764 by 2037. The structure is 22 ft (6.7 m) long and 147 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI-15 (SR-15)NB&SB
CrossesCove Creek
Location1.9 Mi.No.Cove Fort Int.
RouteInterstate 15
CountyMillard County
StateUtah
Coordinates38.60454, -112.60897
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width147 ft (44.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,137 (2017)
Projected traffic21,764 by 2037
Trucks32%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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)NB&SB over Cove Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-15 (SR-15)NB&SB over Cove Creek 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 (SR-15)NB&SB over Cove Creek carry?

About 18,137 vehicles per day (2017 count), of which roughly 32% are trucks.

How long is I-15 (SR-15)NB&SB over Cove Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 147 ft wide.

Who owns I-15 (SR-15)NB&SB over Cove Creek?

It is owned by the State Highway Agency.