US Bridges

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

Fair

Juab County, Utah · 8 Mi.No.Mills Jct.Intchg. · Structure no. 1F 453

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
34,167
2022 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over County Rd.To Lampson Cy. is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Nbl 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 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 34,167 vehicles a day, roughly 32% of them trucks, projected to reach 41,000 by 2042. The structure is 67 ft (20.3 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) Nbl
CrossesCounty Rd.To Lampson Cy.
Location8 Mi.No.Mills Jct.Intchg.
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.59756, -111.91361
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length67 ft (20.3 m)
Longest span65 ft (19.7 m)
Deck width44 ft (13.4 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,167 (2022)
Projected traffic41,000 by 2042
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) Nbl 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) Nbl 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) Nbl over County Rd.To Lampson Cy. carry?

About 34,167 vehicles per day (2022 count), of which roughly 32% are trucks.

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

The structure is 67 ft (20.3 m) long with a longest span of 65 ft (19.7 m) and a deck 44 ft wide.

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

It is owned by the State Highway Agency.