US Bridges

County Road over I-15 (SR-15) Nbl and Sbl

Fair

Juab County, Utah · North of No. Nephi Int. · Structure no. 0C 716

Built
1982
43 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
304 ft
2 main spans
Daily traffic
500
2012 count
Owner
State
State Highway Agency

About this bridge

County Road over I-15 (SR-15) Nbl and Sbl is a steel continuous stringer/multi-beam or girder carrying County Road over I-15 (SR-15) Nbl and Sbl 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 500 vehicles a day, roughly 22% of them trucks, projected to reach 1,000 by 2034. The structure is 304 ft (92.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesI-15 (SR-15) Nbl and Sbl
LocationNorth of No. Nephi Int.
RouteCounty Highway 0
CountyJuab County
StateUtah
Coordinates39.76278, -111.83833
Functional classRural Local

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.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length304 ft (92.6 m)
Longest span157 ft (48 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2012)
Projected traffic1,000 by 2034
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 County Road over I-15 (SR-15) Nbl and Sbl built?

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

What condition is County Road over I-15 (SR-15) Nbl and Sbl 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 County Road over I-15 (SR-15) Nbl and Sbl carry?

About 500 vehicles per day (2012 count), of which roughly 22% are trucks.

How long is County Road over I-15 (SR-15) Nbl and Sbl?

The structure is 304 ft (92.6 m) long with a longest span of 157 ft (48 m) and a deck 34 ft wide.

Who owns County Road over I-15 (SR-15) Nbl and Sbl?

It is owned by the State Highway Agency.