US Bridges

I-15 (SR-15) Sbl over Sevier River

Fair

Juab County, Utah · 11.5 Mi.North of Scipio · Structure no. 3F 432

Built
1982
43 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
118 ft
1 main span
Daily traffic
9,720
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over Sevier River is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over Sevier River in Juab County, Utah. It was built in 1982, so it is 43 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 9,720 vehicles a day, roughly 42% of them trucks, projected to reach 12,150 by 2034. The structure is 118 ft (36.1 m) long and 44 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
CrossesSevier River
Location11.5 Mi.North of Scipio
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.40972, -112.05194
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length118 ft (36.1 m)
Longest span115 ft (35.1 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,720 (2014)
Projected traffic12,150 by 2034
Trucks42%
Lanes on structure2
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-15 (SR-15) Sbl over Sevier River built?

It was built in 1982, making it 43 years old in 2025.

What condition is I-15 (SR-15) Sbl over Sevier River 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 March 2023.

How much traffic does I-15 (SR-15) Sbl over Sevier River carry?

About 9,720 vehicles per day (2014 count), of which roughly 42% are trucks.

How long is I-15 (SR-15) Sbl over Sevier River?

The structure is 118 ft (36.1 m) long with a longest span of 115 ft (35.1 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over Sevier River?

It is owned by the State Highway Agency.