US Bridges

I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch

Fair

Juab County, Utah · 5.4 Mi.No. of Mona Intchg · Structure no. 3C 608

Built
1974
51 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
85 ft
3 main spans
Daily traffic
42,557
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch is a steel continuous stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch in Juab County, Utah. It was built in 1974, so it is 51 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 42,557 vehicles a day, roughly 25% of them trucks, projected to reach 51,068 by 2043. The structure is 85 ft (25.8 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-15 (SR-15) Sbl
CrossesCo. Rd. near Steel Ranch
Location5.4 Mi.No. of Mona Intchg
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.89495, -111.82847
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.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length85 ft (25.8 m)
Longest span35 ft (10.8 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,557 (2023)
Projected traffic51,068 by 2043
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 Co. Rd. near Steel Ranch built?

It was built in 1974, making it 51 years old in 2025.

What condition is I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch 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 Co. Rd. near Steel Ranch carry?

About 42,557 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch?

The structure is 85 ft (25.8 m) long with a longest span of 35 ft (10.8 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over Co. Rd. near Steel Ranch?

It is owned by the State Highway Agency.