US Bridges

I-15(SR-15)NB SB over Co.Rd.To Kanes Spring

Fair

Iron County, Utah · 3.2 Mi.No.So.Parowan Int · Structure no. 0E1850

Built
1974
51 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
24,421
2017 count
Owner
State
State Highway Agency

About this bridge

I-15(SR-15)NB SB over Co.Rd.To Kanes Spring is a concrete culvert carrying I-15(SR-15)NB SB over Co.Rd.To Kanes Spring in Iron County, Utah. It was built in 1974, so it is 51 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 24,421 vehicles a day, roughly 45% of them trucks, projected to reach 29,305 by 2037. The structure is 24 ft (7.3 m) long and 300 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-15(SR-15)NB SB
CrossesCo.Rd.To Kanes Spring
Location3.2 Mi.No.So.Parowan Int
RouteInterstate 15
CountyIron County
StateUtah
Coordinates37.86517, -112.82122
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
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating45.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span23 ft (6.9 m)
Deck width300 ft (91.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,421 (2017)
Projected traffic29,305 by 2037
Trucks45%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Co.Rd.To Kanes Spring built?

It was built in 1974, making it 51 years old in 2025.

What condition is I-15(SR-15)NB SB over Co.Rd.To Kanes Spring 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 March 2023.

How much traffic does I-15(SR-15)NB SB over Co.Rd.To Kanes Spring carry?

About 24,421 vehicles per day (2017 count), of which roughly 45% are trucks.

How long is I-15(SR-15)NB SB over Co.Rd.To Kanes Spring?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (6.9 m) and a deck 300 ft wide.

Who owns I-15(SR-15)NB SB over Co.Rd.To Kanes Spring?

It is owned by the State Highway Agency.