US Bridges

I-15 (SR-15) Sbl over County Rd.To Lampson Cy.

Fair

Juab County, Utah · 8 Mi.No.Mills Jct.Intchg. · Structure no. 3F 453

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
13,275
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over County Rd.To Lampson Cy. is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over County Rd.To Lampson Cy. in Juab County, Utah. It was built in 1984, so it is 41 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 5 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 13,275 vehicles a day, roughly 32% of them trucks, projected to reach 16,594 by 2034. The structure is 68 ft (20.6 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-15 (SR-15) Sbl
CrossesCounty Rd.To Lampson Cy.
Location8 Mi.No.Mills Jct.Intchg.
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.59782, -111.91376
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
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 rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length68 ft (20.6 m)
Longest span65 ft (19.7 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic13,275 (2014)
Projected traffic16,594 by 2034
Trucks32%
Lanes on structure2
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 County Rd.To Lampson Cy. built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-15 (SR-15) Sbl over County Rd.To Lampson Cy. 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 County Rd.To Lampson Cy. carry?

About 13,275 vehicles per day (2014 count), of which roughly 32% are trucks.

How long is I-15 (SR-15) Sbl over County Rd.To Lampson Cy.?

The structure is 68 ft (20.6 m) long with a longest span of 65 ft (19.7 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over County Rd.To Lampson Cy.?

It is owned by the State Highway Agency.