US Bridges

I-15 SB Off Ramp over Corinne Canal

Fair

Box Elder County, Utah · Elwood Interchange · Structure no. 3E1548

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
678
2017 count
Owner
State
State Highway Agency

About this bridge

I-15 SB Off Ramp over Corinne Canal is a concrete culvert carrying I-15 SB Off Ramp over Corinne Canal in Box Elder County, Utah. It was built in 1967, so it is 58 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 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 678 vehicles a day, roughly 35% of them trucks, projected to reach 814 by 2037. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-15 SB Off Ramp
CrossesCorinne Canal
LocationElwood Interchange
RouteInterstate 15
CountyBox Elder County
StateUtah
Coordinates41.67833, -112.14167
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating89.9 US tons
Inventory rating51.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic678 (2017)
Projected traffic814 by 2037
Trucks35%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Corinne Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-15 SB Off Ramp over Corinne Canal 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 April 2023.

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

About 678 vehicles per day (2017 count), of which roughly 35% are trucks.

How long is I-15 SB Off Ramp over Corinne Canal?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns I-15 SB Off Ramp over Corinne Canal?

It is owned by the State Highway Agency.