US Bridges

I-15 SB Off Ramp over I-15 SB on Ramp

Good

Utah County, Utah · I-15 SB Ramp to Triumph · Structure no. 3E2732

Built
2019
6 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
107 ft
1 main span
Daily traffic
23,546
2020 count
Owner
State
State Highway Agency

About this bridge

I-15 SB Off Ramp over I-15 SB on Ramp is a concrete culvert carrying I-15 SB Off Ramp over I-15 SB on Ramp in Utah County, Utah. It was built in 2019, so it is 6 years old, younger than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 23,546 vehicles a day, roughly 25% of them trucks, projected to reach 29,433 by 2040. The structure is 107 ft (32.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-15 SB Off Ramp
CrossesI-15 SB on Ramp
LocationI-15 SB Ramp to Triumph
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.4295, -111.89
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating92.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length107 ft (32.5 m)
Longest span107 ft (32.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic23,546 (2020)
Projected traffic29,433 by 2040
Trucks25%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 SB Off Ramp over I-15 SB on Ramp built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-15 SB Off Ramp over I-15 SB on Ramp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does I-15 SB Off Ramp over I-15 SB on Ramp carry?

About 23,546 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is I-15 SB Off Ramp over I-15 SB on Ramp?

The structure is 107 ft (32.5 m) long with a longest span of 107 ft (32.5 m).

Who owns I-15 SB Off Ramp over I-15 SB on Ramp?

It is owned by the State Highway Agency.