US Bridges

Grafton Road over Horse Valley Wash

Fair

Washington County, Utah · 1 Mile SW of Rockville · Structure no. 053029V

Built
1989
36 years old
Condition
Fair
inspected February 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
126
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Grafton Road over Horse Valley Wash is a steel culvert carrying Grafton Road over Horse Valley Wash in Washington 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 126 vehicles a day, projected to reach 153 by 2030. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesGrafton Road
CrossesHorse Valley Wash
Location1 Mile SW of Rockville
RouteCity Street 3226
CountyWashington County
StateUtah
Coordinates37.15167, -113.05889
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating103.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (2010)
Projected traffic153 by 2030
Trucks0%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Grafton Road over Horse Valley Wash built?

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

What condition is Grafton Road over Horse Valley 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 February 2024.

How much traffic does Grafton Road over Horse Valley Wash carry?

About 126 vehicles per day (2010 count).

How long is Grafton Road over Horse Valley Wash?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns Grafton Road over Horse Valley Wash?

It is owned by the Town or Township Highway Agency.