US Bridges

SR-121 over Steinaker Service Canal

Fair

Uintah County, Utah · In Maeser · Structure no. 0D 246

Built
1932
93 years old, rebuilt 1970
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
47 ft
1 main span
Daily traffic
8,200
2017 count
Owner
State
State Highway Agency

About this bridge

SR-121 over Steinaker Service Canal is a concrete tee beam carrying SR-121 over Steinaker Service Canal in Uintah County, Utah. It was built in 1932 and reconstructed in 1970, so it is 93 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 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 8,200 vehicles a day, roughly 33% of them trucks, projected to reach 9,840 by 2037. The structure is 47 ft (14.2 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR-121
CrossesSteinaker Service Canal
LocationIn Maeser
RouteState Highway 121
CountyUintah County
StateUtah
Coordinates40.46263, -109.55851
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length47 ft (14.2 m)
Longest span44 ft (13.3 m)
Deck width44 ft (13.4 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2017)
Projected traffic9,840 by 2037
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-121 over Steinaker Service Canal built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1970.

What condition is SR-121 over Steinaker Service 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 July 2023.

How much traffic does SR-121 over Steinaker Service Canal carry?

About 8,200 vehicles per day (2017 count), of which roughly 33% are trucks.

How long is SR-121 over Steinaker Service Canal?

The structure is 47 ft (14.2 m) long with a longest span of 44 ft (13.3 m) and a deck 44 ft wide.

Who owns SR-121 over Steinaker Service Canal?

It is owned by the State Highway Agency.