US Bridges

SR-85 Frontage over SR-85 Mainline

Good

Utah County, Utah · SR-85 Frntg SR-85 Main · Structure no. 4F 958

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
14,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR-85 Frontage over SR-85 Mainline is a prestressed concrete stringer/multi-beam or girder carrying SR-85 Frontage over SR-85 Mainline in Utah County, Utah. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,000 vehicles a day, roughly 20% of them trucks, projected to reach 13,000 by 2043. The structure is 84 ft (25.7 m) long and 71 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSR-85 Frontage
CrossesSR-85 Mainline
LocationSR-85 Frntg SR-85 Main
RouteState Highway 85
CountyUtah County
StateUtah
Coordinates40.4145, -111.93226
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 27 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length84 ft (25.7 m)
Longest span81 ft (24.8 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic14,000 (2023)
Projected traffic13,000 by 2043
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 SR-85 Frontage over SR-85 Mainline built?

It was built in 2024, making it 1 years old in 2025.

What condition is SR-85 Frontage over SR-85 Mainline 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 November 2024.

How much traffic does SR-85 Frontage over SR-85 Mainline carry?

About 14,000 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is SR-85 Frontage over SR-85 Mainline?

The structure is 84 ft (25.7 m) long with a longest span of 81 ft (24.8 m) and a deck 71 ft wide.

Who owns SR-85 Frontage over SR-85 Mainline?

It is owned by the State Highway Agency.