US Bridges

I-15 (SR-15) Sbl over 700 North Street Nephi

Fair

Juab County, Utah · Ne. Side of Nephi · Structure no. 3F 443

Built
1982
43 years old, rebuilt 2006
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
43,893
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over 700 North Street Nephi is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over 700 North Street Nephi in Juab County, Utah. It was built in 1982 and reconstructed in 2006, 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 43,893 vehicles a day, roughly 26% of them trucks, projected to reach 52,672 by 2043. The structure is 99 ft (30.2 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
Crosses700 North Street Nephi
LocationNe. Side of Nephi
RouteInterstate 15
CountyJuab County
StateUtah
Coordinates39.71889, -111.81889
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.
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 alignment7: Better than present minimum criteria
Operating rating64.6 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length99 ft (30.2 m)
Longest span96 ft (29.4 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,893 (2023)
Projected traffic52,672 by 2043
Trucks26%
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 700 North Street Nephi built?

It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2006.

What condition is I-15 (SR-15) Sbl over 700 North Street Nephi 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 700 North Street Nephi carry?

About 43,893 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I-15 (SR-15) Sbl over 700 North Street Nephi?

The structure is 99 ft (30.2 m) long with a longest span of 96 ft (29.4 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over 700 North Street Nephi?

It is owned by the State Highway Agency.