US Bridges

I-15 (SR-15) Nbl over Union Pacific Railroad

Fair

Utah County, Utah · 1.1 MI No of Provo Inter. · Structure no. 1C 998

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

About this bridge

I-15 (SR-15) Nbl over Union Pacific Railroad is a steel stringer/multi-beam or girder carrying I-15 (SR-15) Nbl over Union Pacific Railroad 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 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 179,133 vehicles a day, roughly 22% of them trucks, projected to reach 214,960 by 2042. The structure is 195 ft (59.3 m) long and 89 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-15 (SR-15) Nbl
CrossesUnion Pacific Railroad
Location1.1 MI No of Provo Inter.
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.24812, -111.69511
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length195 ft (59.3 m)
Longest span188 ft (57.3 m)
Deck width89 ft (27.1 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179,133 (2022)
Projected traffic214,960 by 2042
Trucks22%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 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) Nbl over Union Pacific Railroad built?

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

What condition is I-15 (SR-15) Nbl over Union Pacific Railroad 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 January 2023.

How much traffic does I-15 (SR-15) Nbl over Union Pacific Railroad carry?

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

How long is I-15 (SR-15) Nbl over Union Pacific Railroad?

The structure is 195 ft (59.3 m) long with a longest span of 188 ft (57.3 m) and a deck 89 ft wide.

Who owns I-15 (SR-15) Nbl over Union Pacific Railroad?

It is owned by the State Highway Agency.