US Bridges

4000 W. County Rd. over Highline Canal

Fair

Millard County, Utah · 600 S.4000 W. Delta Area · Structure no. 027012F

Built
1960
65 years old, rebuilt 1992
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
265
2014 count
Owner
County
County Highway Agency

About this bridge

4000 W. County Rd. over Highline Canal is a prestressed concrete tee beam carrying 4000 W. County Rd. over Highline Canal in Millard County, Utah. It was built in 1960 and reconstructed in 1992, so it is 65 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.

It carries about 265 vehicles a day, roughly 5% of them trucks, projected to reach 322 by 2034. The structure is 25 ft (7.7 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries4000 W. County Rd.
CrossesHighline Canal
Location600 S.4000 W. Delta Area
RouteCounty Highway 1934
CountyMillard County
StateUtah
Coordinates39.34236, -112.65216
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length25 ft (7.7 m)
Longest span23 ft (7 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2014)
Projected traffic322 by 2034
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 4000 W. County Rd. over Highline Canal built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1992.

What condition is 4000 W. County Rd. over Highline 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 March 2024.

How much traffic does 4000 W. County Rd. over Highline Canal carry?

About 265 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is 4000 W. County Rd. over Highline Canal?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7 m) and a deck 33 ft wide.

Who owns 4000 W. County Rd. over Highline Canal?

It is owned by the County Highway Agency.