US Bridges

SR-120 over Richfield Canal

Fair

Sevier County, Utah · S. Side of Richfield · Structure no. 0E2299

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
5,135
2022 count
Owner
State
State Highway Agency

About this bridge

SR-120 over Richfield Canal is a concrete culvert carrying SR-120 over Richfield Canal in Sevier County, Utah. It was built in 1986, so it is 39 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 5,135 vehicles a day, roughly 24% of them trucks, projected to reach 6,162 by 2042. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR-120
CrossesRichfield Canal
LocationS. Side of Richfield
RouteState Highway 120
CountySevier County
StateUtah
Coordinates38.74972, -112.09528
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating74.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length23 ft (6.9 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,135 (2022)
Projected traffic6,162 by 2042
Trucks24%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-120 over Richfield Canal built?

It was built in 1986, making it 39 years old in 2025.

What condition is SR-120 over Richfield Canal 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 May 2023.

How much traffic does SR-120 over Richfield Canal carry?

About 5,135 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is SR-120 over Richfield Canal?

The structure is 23 ft (6.9 m) long with a longest span of 21 ft (6.4 m).

Who owns SR-120 over Richfield Canal?

It is owned by the State Highway Agency.