US Bridges

SR-171 Ramp B over Sup

Good

Salt Lake County, Utah · SR-85 to SR-171 Ramp B · Structure no. 1E2753

Built
2021
4 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
11,420
2023 count
Owner
State
State Highway Agency

About this bridge

SR-171 Ramp B over Sup is a concrete culvert carrying SR-171 Ramp B over Sup in Salt Lake County, Utah. It was built in 2021, so it is 4 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 11,420 vehicles a day, roughly 16% of them trucks, projected to reach 13,704 by 2043. The structure is 28 ft (8.5 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR-171 Ramp B
CrossesSup
LocationSR-85 to SR-171 Ramp B
RouteState Highway 85
CountySalt Lake County
StateUtah
Coordinates40.6938, -112.0285
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
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width54 ft (16.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic11,420 (2023)
Projected traffic13,704 by 2043
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
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 SR-171 Ramp B over Sup built?

It was built in 2021, making it 4 years old in 2025.

What condition is SR-171 Ramp B over Sup 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 December 2024.

How much traffic does SR-171 Ramp B over Sup carry?

About 11,420 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR-171 Ramp B over Sup?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 54 ft wide.

Who owns SR-171 Ramp B over Sup?

It is owned by the State Highway Agency.