US Bridges

I-15 (SR-15) Sbl over SR-160 Intchg. X-Road

Fair

Beaver County, Utah · North Beaver Interchange · Structure no. 3F 132

Built
1970
55 years old, rebuilt 1984
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
24,161
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over SR-160 Intchg. X-Road is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over SR-160 Intchg. X-Road in Beaver County, Utah. It was built in 1970 and reconstructed in 1984, so it is 55 years old, older 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 24,161 vehicles a day, roughly 31% of them trucks, projected to reach 28,993 by 2043. The structure is 105 ft (31.9 m) long and 44 ft wide.

Location

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CarriesI-15 (SR-15) Sbl
CrossesSR-160 Intchg. X-Road
LocationNorth Beaver Interchange
RouteInterstate 15
CountyBeaver County
StateUtah
Coordinates38.29373, -112.65113
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (31.9 m)
Longest span100 ft (30.6 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic24,161 (2023)
Projected traffic28,993 by 2043
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-15 (SR-15) Sbl over SR-160 Intchg. X-Road built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1984.

What condition is I-15 (SR-15) Sbl over SR-160 Intchg. X-Road 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 February 2023.

How much traffic does I-15 (SR-15) Sbl over SR-160 Intchg. X-Road carry?

About 24,161 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-15 (SR-15) Sbl over SR-160 Intchg. X-Road?

The structure is 105 ft (31.9 m) long with a longest span of 100 ft (30.6 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over SR-160 Intchg. X-Road?

It is owned by the State Highway Agency.