US Bridges

I-15 (SR-15) Nbl over Hot Springs Lane and U

Fair

Box Elder County, Utah · 0.8 Mi.No.Hot Springs Int · Structure no. 1C 665

Built
1976
49 years old, rebuilt 2016
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
3 main spans
Daily traffic
67,875
2017 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over Hot Springs Lane and U is a steel continuous stringer/multi-beam or girder carrying I-15 (SR-15) Nbl over Hot Springs Lane and U in Box Elder County, Utah. It was built in 1976 and reconstructed in 2016, so it is 49 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 67,875 vehicles a day, roughly 32% of them trucks, projected to reach 81,450 by 2037. The structure is 152 ft (46.4 m) long and 62 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
CrossesHot Springs Lane and U
Location0.8 Mi.No.Hot Springs Int
RouteInterstate 15
CountyBox Elder County
StateUtah
Coordinates41.35139, -112.04111
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating49.3 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length152 ft (46.4 m)
Longest span107 ft (32.6 m)
Deck width62 ft (19 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67,875 (2017)
Projected traffic81,450 by 2037
Trucks32%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 Hot Springs Lane and U built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2016.

What condition is I-15 (SR-15) Nbl over Hot Springs Lane and U 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 May 2023.

How much traffic does I-15 (SR-15) Nbl over Hot Springs Lane and U carry?

About 67,875 vehicles per day (2017 count), of which roughly 32% are trucks.

How long is I-15 (SR-15) Nbl over Hot Springs Lane and U?

The structure is 152 ft (46.4 m) long with a longest span of 107 ft (32.6 m) and a deck 62 ft wide.

Who owns I-15 (SR-15) Nbl over Hot Springs Lane and U?

It is owned by the State Highway Agency.