US Bridges

I-15NB (SR-15) over Provo River

Good

Utah County, Utah · Provo R. No. of Center ST · Structure no. 1F 823

Built
2011
14 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
179,133
2022 count
Owner
State
State Highway Agency

About this bridge

I-15NB (SR-15) over Provo River is a prestressed concrete stringer/multi-beam or girder carrying I-15NB (SR-15) over Provo River in Utah County, Utah. It was built in 2011, so it is 14 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 179,133 vehicles a day, roughly 22% of them trucks, projected to reach 214,960 by 2042. The structure is 99 ft (30.3 m) long and 100 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15NB (SR-15)
CrossesProvo River
LocationProvo R. No. of Center ST
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.23907, -111.68971
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+1 approach)
Design loadHL 93
Structure length99 ft (30.3 m)
Longest span96 ft (29.3 m)
Deck width100 ft (30.6 m)
Roadway width97 ft (29.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179,133 (2022)
Projected traffic214,960 by 2042
Trucks22%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 Provo River built?

It was built in 2011, making it 14 years old in 2025.

What condition is I-15NB (SR-15) over Provo River 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 Provo River carry?

About 179,133 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is I-15NB (SR-15) over Provo River?

The structure is 99 ft (30.3 m) long with a longest span of 96 ft (29.3 m) and a deck 100 ft wide.

Who owns I-15NB (SR-15) over Provo River?

It is owned by the State Highway Agency.