US Bridges

County Road over Antimony Canal

Fair

Garfield County, Utah · 0.5 Mile Sw. of Antimony · Structure no. 017036F

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
25
2010 count
Owner
County
County Highway Agency

About this bridge

County Road over Antimony Canal is a prestressed concrete tee beam carrying County Road over Antimony Canal in Garfield County, Utah. It was built in 1984, so it is 41 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 25 vehicles a day, projected to reach 31 by 2030. The structure is 30 ft (9.1 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesAntimony Canal
Location0.5 Mile Sw. of Antimony
RouteCounty Highway 0
CountyGarfield County
StateUtah
Coordinates38.11081, -112.00486
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic25 (2010)
Projected traffic31 by 2030
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road over Antimony Canal built?

It was built in 1984, making it 41 years old in 2025.

What condition is County Road over Antimony 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 2024.

How much traffic does County Road over Antimony Canal carry?

About 25 vehicles per day (2010 count).

How long is County Road over Antimony Canal?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns County Road over Antimony Canal?

It is owned by the County Highway Agency.