US Bridges

I-15 (SR-15) Sbl over I-215WB and Ramp to I-

Good

Salt Lake County, Utah · 6400 South Interchange · Structure no. 3F 615S

Built
1999
26 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
213 ft
1 main span
Daily traffic
191,939
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over I-215WB and Ramp to I- is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over I-215WB and Ramp to I- 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 191,939 vehicles a day, roughly 15% of them trucks, projected to reach 230,327 by 2043. The structure is 213 ft (65 m) long and 85 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-15 (SR-15) Sbl
CrossesI-215WB and Ramp to I-
Location6400 South Interchange
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.6366, -111.90487
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length213 ft (65 m)
Longest span203 ft (62 m)
Deck width85 ft (25.9 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic191,939 (2023)
Projected traffic230,327 by 2043
Trucks15%
Lanes on structure5
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 I-215WB and Ramp to I- built?

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

What condition is I-15 (SR-15) Sbl over I-215WB and Ramp to I- in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2022.

How much traffic does I-15 (SR-15) Sbl over I-215WB and Ramp to I- carry?

About 191,939 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-15 (SR-15) Sbl over I-215WB and Ramp to I-?

The structure is 213 ft (65 m) long with a longest span of 203 ft (62 m) and a deck 85 ft wide.

Who owns I-15 (SR-15) Sbl over I-215WB and Ramp to I-?

It is owned by the State Highway Agency.