US Bridges

I-15 (SR-15) Nbl over 900 South & UPRR

Fair

Salt Lake County, Utah · 650 West 900 So.St. Slc. · Structure no. 1C 868N

Built
1999
26 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
568 ft
4 main spans
Daily traffic
217,800
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Nbl over 900 South & UPRR is a steel stringer/multi-beam or girder carrying I-15 (SR-15) Nbl over 900 South & UPRR 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 217,800 vehicles a day, roughly 7% of them trucks, projected to reach 272,250 by 2034. The structure is 568 ft (173.1 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15 (SR-15) Nbl
Crosses900 South & UPRR
Location650 West 900 So.St. Slc.
RouteInterstate 15
CountySalt Lake County
StateUtah
Coordinates40.74881, -111.90842
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length568 ft (173.1 m)
Longest span156 ft (47.6 m)
Deck width113 ft (34.4 m)
Roadway width110 ft (33.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic217,800 (2014)
Projected traffic272,250 by 2034
Trucks7%
Lanes on structure7
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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) Nbl over 900 South & UPRR built?

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

What condition is I-15 (SR-15) Nbl over 900 South & UPRR 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) Nbl over 900 South & UPRR carry?

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

How long is I-15 (SR-15) Nbl over 900 South & UPRR?

The structure is 568 ft (173.1 m) long with a longest span of 156 ft (47.6 m) and a deck 113 ft wide.

Who owns I-15 (SR-15) Nbl over 900 South & UPRR?

It is owned by the State Highway Agency.