US Bridges

I-15 (SR-15) Sbl over SR-270 Sbl

Fair

Salt Lake County, Utah · APPROX.450 W.1200 So.Slc. · Structure no. 3F 636S

Built
2000
25 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
239 ft
3 main spans
Daily traffic
217,800
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over SR-270 Sbl is a prestressed concrete continuous stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over SR-270 Sbl in Salt Lake County, Utah. It was built in 2000, so it is 25 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 217,800 vehicles a day, roughly 7% of them trucks, projected to reach 272,250 by 2034. The structure is 239 ft (72.8 m) long and 89 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
CrossesSR-270 Sbl
LocationAPPROX.450 W.1200 So.Slc.
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.74564, -111.90495
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length239 ft (72.8 m)
Longest span105 ft (31.9 m)
Deck width89 ft (27.1 m)
Roadway width86 ft (26.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic217,800 (2014)
Projected traffic272,250 by 2034
Trucks7%
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) Sbl over SR-270 Sbl built?

It was built in 2000, making it 25 years old in 2025.

What condition is I-15 (SR-15) Sbl over SR-270 Sbl 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 July 2024.

How much traffic does I-15 (SR-15) Sbl over SR-270 Sbl carry?

About 217,800 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is I-15 (SR-15) Sbl over SR-270 Sbl?

The structure is 239 ft (72.8 m) long with a longest span of 105 ft (31.9 m) and a deck 89 ft wide.

Who owns I-15 (SR-15) Sbl over SR-270 Sbl?

It is owned by the State Highway Agency.