US Bridges

I-15 (SR-15) Nbl over 7800 South St. Center ST

Fair

Salt Lake County, Utah · 400 W.Center St.-Midvale · Structure no. 1F 648N

Built
1999
26 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
194 ft
3 main spans
Daily traffic
230,000
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over 7800 South St. Center ST is a prestressed concrete continuous stringer/multi-beam or girder carrying I-15 (SR-15) Nbl over 7800 South St. Center ST in Salt Lake County, Utah. It was built in 1999, so it is 26 years old, younger 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 230,000 vehicles a day, roughly 25% of them trucks, projected to reach 287,500 by 2034. The structure is 194 ft (59.2 m) long and 97 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
Crosses7800 South St. Center ST
Location400 W.Center St.-Midvale
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.61058, -111.90555
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.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
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 rating67.9 US tons
Inventory rating57.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length194 ft (59.2 m)
Longest span97 ft (29.5 m)
Deck width97 ft (29.5 m)
Roadway width94 ft (28.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230,000 (2014)
Projected traffic287,500 by 2034
Trucks25%
Lanes on structure5
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 7800 South St. Center ST built?

It was built in 1999, making it 26 years old in 2025.

What condition is I-15 (SR-15) Nbl over 7800 South St. Center ST 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 October 2024.

How much traffic does I-15 (SR-15) Nbl over 7800 South St. Center ST carry?

About 230,000 vehicles per day (2014 count), of which roughly 25% are trucks.

How long is I-15 (SR-15) Nbl over 7800 South St. Center ST?

The structure is 194 ft (59.2 m) long with a longest span of 97 ft (29.5 m) and a deck 97 ft wide.

Who owns I-15 (SR-15) Nbl over 7800 South St. Center ST?

It is owned by the State Highway Agency.