US Bridges

County Road over Coal Wash

FairPosted for load

Carbon County, Utah · 2.5 Mile N. of Wellington · Structure no. 007007C

Built
1915
110 years old, rebuilt 1964
Condition
Fair
inspected June 2024
Type
Truss - Thru
Steel
Length
103 ft
1 main span
Daily traffic
378
2010 count
Owner
County
County Highway Agency

About this bridge

County Road over Coal Wash is a steel truss - thru carrying County Road over Coal Wash in Carbon County, Utah. It was built in 1915 and reconstructed in 1964, so it is 110 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. Its operating status is: posted for load restriction.

It carries about 378 vehicles a day, roughly 1% of them trucks, projected to reach 459 by 2030. The structure is 103 ft (31.5 m) long and 21 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesCoal Wash
Location2.5 Mile N. of Wellington
RouteCounty Highway 1320
CountyCarbon County
StateUtah
Coordinates39.57735, -110.68582
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating21.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length103 ft (31.5 m)
Longest span100 ft (30.5 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic378 (2010)
Projected traffic459 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road over Coal Wash built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1964.

What condition is County Road over Coal Wash 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 June 2024.

How much traffic does County Road over Coal Wash carry?

About 378 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is County Road over Coal Wash?

The structure is 103 ft (31.5 m) long with a longest span of 100 ft (30.5 m) and a deck 21 ft wide.

Who owns County Road over Coal Wash?

It is owned by the County Highway Agency.