US Bridges

SR-121 over Uintah Canal NO.1

Fair

Duchesne County, Utah · 1.7 Miles East of Neola · Structure no. 0E1140

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
60 ft
2 main spans
Daily traffic
1,755
2022 count
Owner
State
State Highway Agency

About this bridge

SR-121 over Uintah Canal NO.1 is a concrete continuous culvert carrying SR-121 over Uintah Canal NO.1 in Duchesne County, Utah. It was built in 1959, so it is 66 years old, older 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 5 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 1,755 vehicles a day, roughly 36% of them trucks, projected to reach 2,106 by 2042. The structure is 60 ft (18.3 m) long and 37 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesSR-121
CrossesUintah Canal NO.1
Location1.7 Miles East of Neola
RouteState Highway 121
CountyDuchesne County
StateUtah
Coordinates40.43278, -109.99722
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length60 ft (18.3 m)
Longest span28 ft (8.6 m)
Deck width37 ft (11.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,755 (2022)
Projected traffic2,106 by 2042
Trucks36%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

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-121 over Uintah Canal NO.1 built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR-121 over Uintah Canal NO.1 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 2023.

How much traffic does SR-121 over Uintah Canal NO.1 carry?

About 1,755 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is SR-121 over Uintah Canal NO.1?

The structure is 60 ft (18.3 m) long with a longest span of 28 ft (8.6 m) and a deck 37 ft wide.

Who owns SR-121 over Uintah Canal NO.1?

It is owned by the State Highway Agency.