US Bridges

I-15 NB Col-Dist. over 2100 South Street

Fair

Salt Lake County, Utah · 2100 South Interchange · Structure no. 1F 631

Built
1999
26 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
148 ft
1 main span
Daily traffic
268,370
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 NB Col-Dist. over 2100 South Street is a prestressed concrete stringer/multi-beam or girder carrying I-15 NB Col-Dist. over 2100 South Street 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 268,370 vehicles a day, roughly 15% of them trucks, projected to reach 335,463 by 2034. The structure is 148 ft (45.2 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 NB Col-Dist.
Crosses2100 South Street
Location2100 South Interchange
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.72506, -111.90344
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length148 ft (45.2 m)
Longest span145 ft (44.3 m)
Deck width84 ft (25.7 m)
Roadway width78 ft (23.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic268,370 (2014)
Projected traffic335,463 by 2034
Trucks15%
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

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 NB Col-Dist. over 2100 South Street built?

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

What condition is I-15 NB Col-Dist. over 2100 South Street 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 NB Col-Dist. over 2100 South Street carry?

About 268,370 vehicles per day (2014 count), of which roughly 15% are trucks.

How long is I-15 NB Col-Dist. over 2100 South Street?

The structure is 148 ft (45.2 m) long with a longest span of 145 ft (44.3 m) and a deck 84 ft wide.

Who owns I-15 NB Col-Dist. over 2100 South Street?

It is owned by the State Highway Agency.