US Bridges

I-15 (SR-15) Sbl over Uta Light Rail Spur Line

Fair

Salt Lake County, Utah · 0.1 Mi.So.Of 6400 So.St. · Structure no. 3F 611S

Built
1999
26 years old, rebuilt 2019
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
226 ft
1 main span
Daily traffic
246,810
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over Uta Light Rail Spur Line is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over Uta Light Rail Spur Line in Salt Lake County, Utah. It was built in 1999 and reconstructed in 2019, 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 246,810 vehicles a day, roughly 27% of them trucks, projected to reach 308,513 by 2034. The structure is 226 ft (68.9 m) long and 107 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 (SR-15) Sbl
CrossesUta Light Rail Spur Line
Location0.1 Mi.So.Of 6400 So.St.
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.63114, -111.90422
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length226 ft (68.9 m)
Longest span215 ft (65.5 m)
Deck width107 ft (32.7 m)
Roadway width105 ft (31.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic246,810 (2014)
Projected traffic308,513 by 2034
Trucks27%
Lanes on structure7
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 Uta Light Rail Spur Line built?

It was built in 1999, making it 26 years old in 2025. It was reconstructed in 2019.

What condition is I-15 (SR-15) Sbl over Uta Light Rail Spur Line 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) Sbl over Uta Light Rail Spur Line carry?

About 246,810 vehicles per day (2014 count), of which roughly 27% are trucks.

How long is I-15 (SR-15) Sbl over Uta Light Rail Spur Line?

The structure is 226 ft (68.9 m) long with a longest span of 215 ft (65.5 m) and a deck 107 ft wide.

Who owns I-15 (SR-15) Sbl over Uta Light Rail Spur Line?

It is owned by the State Highway Agency.