US Bridges

I-15 (SR-15) Sbl over 1800 No ST in Farr West

Fair

Weber County, Utah · 1.4MI.NO.SLATERVILLE Int. · Structure no. 3F 748

Built
2008
17 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
69,135
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over 1800 No ST in Farr West is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over 1800 No ST in Farr West in Weber County, Utah. It was built in 2008, so it is 17 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 69,135 vehicles a day, roughly 33% of them trucks, projected to reach 82,962 by 2043. The structure is 85 ft (25.9 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 (SR-15) Sbl
Crosses1800 No ST in Farr West
Location1.4MI.NO.SLATERVILLE Int.
RouteInterstate 15
CountyWeber County
StateUtah
Coordinates41.28972, -112.02611
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.
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 rating63.6 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length85 ft (25.9 m)
Longest span82 ft (25 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,135 (2023)
Projected traffic82,962 by 2043
Trucks33%
Lanes on structure3
Traffic directionOne-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-15 (SR-15) Sbl over 1800 No ST in Farr West built?

It was built in 2008, making it 17 years old in 2025.

What condition is I-15 (SR-15) Sbl over 1800 No ST in Farr West 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 August 2023.

How much traffic does I-15 (SR-15) Sbl over 1800 No ST in Farr West carry?

About 69,135 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is I-15 (SR-15) Sbl over 1800 No ST in Farr West?

The structure is 85 ft (25.9 m) long with a longest span of 82 ft (25 m) and a deck 65 ft wide.

Who owns I-15 (SR-15) Sbl over 1800 No ST in Farr West?

It is owned by the State Highway Agency.