US Bridges

I-15NB (SR-15) over 400 South St. in Orem

Good

Utah County, Utah · 800 West 400 South · Structure no. 1F 815

Built
2012
13 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
182,420
2021 count
Owner
State
State Highway Agency

About this bridge

I-15NB (SR-15) over 400 South St. in Orem is a prestressed concrete stringer/multi-beam or girder carrying I-15NB (SR-15) over 400 South St. in Orem in Utah County, Utah. It was built in 2012, so it is 13 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 182,420 vehicles a day, roughly 21% of them trucks, projected to reach 218,904 by 2041. The structure is 106 ft (32.3 m) long and 112 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15NB (SR-15)
Crosses400 South St. in Orem
Location800 West 400 South
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.28969, -111.72543
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span103 ft (31.4 m)
Deck width112 ft (34.2 m)
Roadway width110 ft (33.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic182,420 (2021)
Projected traffic218,904 by 2041
Trucks21%
Lanes on structure14
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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-15NB (SR-15) over 400 South St. in Orem built?

It was built in 2012, making it 13 years old in 2025.

What condition is I-15NB (SR-15) over 400 South St. in Orem 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 January 2023.

How much traffic does I-15NB (SR-15) over 400 South St. in Orem carry?

About 182,420 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is I-15NB (SR-15) over 400 South St. in Orem?

The structure is 106 ft (32.3 m) long with a longest span of 103 ft (31.4 m) and a deck 112 ft wide.

Who owns I-15NB (SR-15) over 400 South St. in Orem?

It is owned by the State Highway Agency.