US Bridges

I-15 SB (SR-15) over UPRR & Uta

Good

Weber County, Utah · 0.5MI.NO. of 31st St.Intr · Structure no. 3F 739

Built
2009
16 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
151 ft
1 main span
Daily traffic
120,588
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 SB (SR-15) over UPRR & Uta is a prestressed concrete stringer/multi-beam or girder carrying I-15 SB (SR-15) over UPRR & Uta in Weber County, Utah. It was built in 2009, so it is 16 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 120,588 vehicles a day, roughly 35% of them trucks, projected to reach 144,706 by 2043. The structure is 151 ft (46.1 m) long and 89 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 SB (SR-15)
CrossesUPRR & Uta
Location0.5MI.NO. of 31st St.Intr
RouteInterstate 15
CountyWeber County
StateUtah
Coordinates41.21081, -111.99822
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating57.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length151 ft (46.1 m)
Longest span148 ft (45 m)
Deck width89 ft (27.1 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120,588 (2023)
Projected traffic144,706 by 2043
Trucks35%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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 (SR-15) over UPRR & Uta built?

It was built in 2009, making it 16 years old in 2025.

What condition is I-15 SB (SR-15) over UPRR & Uta 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 August 2023.

How much traffic does I-15 SB (SR-15) over UPRR & Uta carry?

About 120,588 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is I-15 SB (SR-15) over UPRR & Uta?

The structure is 151 ft (46.1 m) long with a longest span of 148 ft (45 m) and a deck 89 ft wide.

Who owns I-15 SB (SR-15) over UPRR & Uta?

It is owned by the State Highway Agency.