US Bridges

County Road over Miller Creek

Fair

Carbon County, Utah · 3 Miles Sw. of Wellington · Structure no. 007002F

Built
1979
46 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
252
2010 count
Owner
County
County Highway Agency

About this bridge

County Road over Miller Creek is a prestressed concrete tee beam carrying County Road over Miller Creek in Carbon County, Utah. It was built in 1979, so it is 46 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 252 vehicles a day, roughly 1% of them trucks, projected to reach 306 by 2030. The structure is 49 ft (14.9 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesMiller Creek
Location3 Miles Sw. of Wellington
RouteCounty Highway 1318
CountyCarbon County
StateUtah
Coordinates39.51281, -110.75639
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadH 15
Structure length49 ft (14.9 m)
Longest span43 ft (13.1 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic252 (2010)
Projected traffic306 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Miller Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is County Road over Miller Creek 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 Miller Creek carry?

About 252 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is County Road over Miller Creek?

The structure is 49 ft (14.9 m) long with a longest span of 43 ft (13.1 m) and a deck 25 ft wide.

Who owns County Road over Miller Creek?

It is owned by the County Highway Agency.