US Bridges

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

Fair

Utah County, Utah · I-15 SB Off Ramp to Lehi · Structure no. 3E2734

Built
2020
5 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
48 ft
1 main span
Daily traffic
195,000
2022 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 2020, so it is 5 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 195,000 vehicles a day, roughly 5% of them trucks, projected to reach 193,750 by 2042. The structure is 48 ft (14.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 SB Off Ramp
CrossesI-15 SB on Ramp
LocationI-15 SB Off Ramp to Lehi
RouteState Highway 15
CountyUtah County
StateUtah
Coordinates40.41861, -111.87667
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
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length48 ft (14.7 m)
Longest span45 ft (13.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic195,000 (2022)
Projected traffic193,750 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 SB Off Ramp over I-15 SB on Ramp built?

It was built in 2020, making it 5 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 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 SB Off Ramp over I-15 SB on Ramp carry?

About 195,000 vehicles per day (2022 count), of which roughly 5% are trucks.

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

The structure is 48 ft (14.7 m) long with a longest span of 45 ft (13.8 m).

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

It is owned by the State Highway Agency.