US Bridges

I-15 NB Col-Dist. over 1700 South Street

Fair

Salt Lake County, Utah · 400 West 1700 South Slc. · Structure no. 1F 634

Built
1999
26 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
138 ft
1 main span
Daily traffic
245,310
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 NB Col-Dist. over 1700 South Street is a prestressed concrete stringer/multi-beam or girder carrying I-15 NB Col-Dist. over 1700 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 5 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 245,310 vehicles a day, roughly 11% of them trucks, projected to reach 306,638 by 2034. The structure is 138 ft (42.2 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-15 NB Col-Dist.
Crosses1700 South Street
Location400 West 1700 South Slc.
RouteInterstate 15
StateUtah
Coordinates40.73319, -111.9041
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length138 ft (42.2 m)
Longest span135 ft (41.3 m)
Deck width70 ft (21.3 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic245,310 (2014)
Projected traffic306,638 by 2034
Trucks11%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
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 1700 South Street built?

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

What condition is I-15 NB Col-Dist. over 1700 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 1700 South Street carry?

About 245,310 vehicles per day (2014 count), of which roughly 11% are trucks.

How long is I-15 NB Col-Dist. over 1700 South Street?

The structure is 138 ft (42.2 m) long with a longest span of 135 ft (41.3 m) and a deck 70 ft wide.

Who owns I-15 NB Col-Dist. over 1700 South Street?

It is owned by the State Highway Agency.