US Bridges

I-15 (SR-15) Sbl over SR-171 33rd South St.

Fair

Salt Lake County, Utah · 3300 South Interchange · Structure no. 3F 619S

Built
2000
25 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
237 ft
1 main span
Daily traffic
218,515
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over SR-171 33rd South St. is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over SR-171 33rd South St. 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 218,515 vehicles a day, roughly 24% of them trucks, projected to reach 273,144 by 2034. The structure is 237 ft (72.2 m) long and 84 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
CrossesSR-171 33rd South St.
Location3300 South Interchange
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.70038, -111.90267
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length237 ft (72.2 m)
Longest span226 ft (69 m)
Deck width84 ft (25.6 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic218,515 (2014)
Projected traffic273,144 by 2034
Trucks24%
Lanes on structure5
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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-171 33rd South St. built?

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

What condition is I-15 (SR-15) Sbl over SR-171 33rd South 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) Sbl over SR-171 33rd South St. carry?

About 218,515 vehicles per day (2014 count), of which roughly 24% are trucks.

How long is I-15 (SR-15) Sbl over SR-171 33rd South St.?

The structure is 237 ft (72.2 m) long with a longest span of 226 ft (69 m) and a deck 84 ft wide.

Who owns I-15 (SR-15) Sbl over SR-171 33rd South St.?

It is owned by the State Highway Agency.