US Bridges

I-15 over Mall Drive

Good

Washington County, Utah · I-15 NB over Mall Dr. · Structure no. 1F 860

Built
2017
8 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
66,408
2022 count
Owner
State
State Highway Agency

About this bridge

I-15 over Mall Drive is a prestressed concrete stringer/multi-beam or girder carrying I-15 over Mall Drive in Washington County, Utah. It was built in 2017, so it is 8 years old, younger than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 66,408 vehicles a day, roughly 21% of them trucks, projected to reach 79,690 by 2042. The structure is 134 ft (40.9 m) long and 65 ft wide.

Location

Open in Google Maps
CarriesI-15
CrossesMall Drive
LocationI-15 NB over Mall Dr.
RouteInterstate 15
CountyWashington County
StateUtah
Coordinates37.11818, -113.54677
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length134 ft (40.9 m)
Longest span112 ft (34.2 m)
Deck width65 ft (19.9 m)
Roadway width63 ft (19.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66,408 (2022)
Projected traffic79,690 by 2042
Trucks21%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 over Mall Drive built?

It was built in 2017, making it 8 years old in 2025.

What condition is I-15 over Mall Drive in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does I-15 over Mall Drive carry?

About 66,408 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is I-15 over Mall Drive?

The structure is 134 ft (40.9 m) long with a longest span of 112 ft (34.2 m) and a deck 65 ft wide.

Who owns I-15 over Mall Drive?

It is owned by the State Highway Agency.