US Bridges

County Road over Gray Mountain Canal

Fair

Duchesne County, Utah · 1.5 Mi. Se. of Bridgeland · Structure no. 013076C

Built
1985
40 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
101
2010 count
Owner
County
County Highway Agency

About this bridge

County Road over Gray Mountain Canal is a steel stringer/multi-beam or girder carrying County Road over Gray Mountain Canal in Duchesne County, Utah. It was built in 1985, so it is 40 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 101 vehicles a day, roughly 90% of them trucks, projected to reach 122 by 2030. The structure is 36 ft (10.9 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty Road
CrossesGray Mountain Canal
Location1.5 Mi. Se. of Bridgeland
RouteCounty Highway 1538
CountyDuchesne County
StateUtah
Coordinates40.14912, -110.21903
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20 + Mod
Structure length36 ft (10.9 m)
Longest span34 ft (10.5 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101 (2010)
Projected traffic122 by 2030
Trucks90%
Lanes on structure2
Traffic directionTwo-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 Gray Mountain Canal built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Road over Gray Mountain 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 April 2024.

How much traffic does County Road over Gray Mountain Canal carry?

About 101 vehicles per day (2010 count), of which roughly 90% are trucks.

How long is County Road over Gray Mountain Canal?

The structure is 36 ft (10.9 m) long with a longest span of 34 ft (10.5 m) and a deck 26 ft wide.

Who owns County Road over Gray Mountain Canal?

It is owned by the County Highway Agency.