US Bridges

I-15 SB over East Nichols Canyon Road

Good

Iron County, Utah · I-15 SB over E Nichols RD · Structure no. 3C1071

Built
2021
4 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
1 main span
Daily traffic
29,000
2017 count
Owner
State
State Highway Agency

About this bridge

I-15 SB over East Nichols Canyon Road is a steel stringer/multi-beam or girder carrying I-15 SB over East Nichols Canyon Road in Iron County, Utah. It was built in 2021, so it is 4 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 29,000 vehicles a day, roughly 35% of them trucks, projected to reach 43,300 by 2037. The structure is 81 ft (24.8 m) long and 45 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI-15 SB
CrossesEast Nichols Canyon Road
LocationI-15 SB over E Nichols RD
RouteInterstate 15
CountyIron County
StateUtah
Coordinates37.722, -113.059
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length81 ft (24.8 m)
Longest span77 ft (23.5 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,000 (2017)
Projected traffic43,300 by 2037
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 over East Nichols Canyon Road built?

It was built in 2021, making it 4 years old in 2025.

What condition is I-15 SB over East Nichols Canyon Road 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 March 2023.

How much traffic does I-15 SB over East Nichols Canyon Road carry?

About 29,000 vehicles per day (2017 count), of which roughly 35% are trucks.

How long is I-15 SB over East Nichols Canyon Road?

The structure is 81 ft (24.8 m) long with a longest span of 77 ft (23.5 m) and a deck 45 ft wide.

Who owns I-15 SB over East Nichols Canyon Road?

It is owned by the State Highway Agency.