US Bridges

Onyx DR over Wash

Good

Yavapai County, Arizona · 0.05 MI E of JCT SR 69 · Structure no. 10758

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
520
2021 count
Owner
County
County Highway Agency

About this bridge

Onyx DR over Wash is a concrete continuous culvert carrying Onyx DR over Wash in Yavapai County, Arizona. It was built in 1995, so it is 30 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 520 vehicles a day, roughly 1% of them trucks, projected to reach 530 by 2041. The structure is 31 ft (9.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOnyx DR
CrossesWash
Location0.05 MI E of JCT SR 69
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.5651, -112.3726
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2021)
Projected traffic530 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Onyx DR over Wash built?

It was built in 1995, making it 30 years old in 2025.

What condition is Onyx DR over Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Onyx DR over Wash carry?

About 520 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Onyx DR over Wash?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Onyx DR over Wash?

It is owned by the County Highway Agency.