US Bridges

SR-21 over Beaver River

Fair

Beaver County, Utah · 11.5 Mi. West of Beaver · Structure no. 0E1039

Built
1955
70 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
1,258
2021 count
Owner
State
State Highway Agency

About this bridge

SR-21 over Beaver River is a concrete continuous culvert carrying SR-21 over Beaver River in Beaver County, Utah. It was built in 1955, so it is 70 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 1,258 vehicles a day, roughly 18% of them trucks, projected to reach 1,510 by 2041. The structure is 27 ft (8.2 m) long and 38 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesSR-21
CrossesBeaver River
Location11.5 Mi. West of Beaver
RouteState Highway 21
CountyBeaver County
StateUtah
Coordinates38.21565, -112.83579
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span13 ft (3.9 m)
Deck width38 ft (11.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,258 (2021)
Projected traffic1,510 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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-21 over Beaver River built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR-21 over Beaver River 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 February 2023.

How much traffic does SR-21 over Beaver River carry?

About 1,258 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is SR-21 over Beaver River?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (3.9 m) and a deck 38 ft wide.

Who owns SR-21 over Beaver River?

It is owned by the State Highway Agency.