US Bridges

Co.Rd. 6400 So. ST over Benjamin Slough

Fair

Utah County, Utah · 5800 West 6400 South · Structure no. 049040V

Built
1989
36 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
29 ft
2 main spans
Daily traffic
177
2013 count
Owner
County
County Highway Agency

About this bridge

Co.Rd. 6400 So. ST over Benjamin Slough is a steel culvert carrying Co.Rd. 6400 So. ST over Benjamin Slough in Utah County, Utah. It was built in 1989, so it is 36 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 177 vehicles a day, roughly 4% of them trucks, projected to reach 216 by 2033. The structure is 29 ft (8.9 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCo.Rd. 6400 So. ST
CrossesBenjamin Slough
Location5800 West 6400 South
RouteCounty Highway 0
CountyUtah County
StateUtah
Coordinates40.11419, -111.79319
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating32.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length29 ft (8.9 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic177 (2013)
Projected traffic216 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Co.Rd. 6400 So. ST over Benjamin Slough built?

It was built in 1989, making it 36 years old in 2025.

What condition is Co.Rd. 6400 So. ST over Benjamin Slough 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 October 2023.

How much traffic does Co.Rd. 6400 So. ST over Benjamin Slough carry?

About 177 vehicles per day (2013 count), of which roughly 4% are trucks.

How long is Co.Rd. 6400 So. ST over Benjamin Slough?

The structure is 29 ft (8.9 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Co.Rd. 6400 So. ST over Benjamin Slough?

It is owned by the County Highway Agency.