US Bridges

Ironsp-Skull Vly R over Dry Wash

Good

Yavapai County, Arizona · 5.8 MI N JCT Kirkland RD · Structure no. 09456

Built
1958
67 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
1,090
2021 count
Owner
County
County Highway Agency

About this bridge

Ironsp-Skull Vly R over Dry Wash is a concrete continuous culvert carrying Ironsp-Skull Vly R over Dry Wash in Yavapai County, Arizona. It was built in 1958, so it is 67 years old, older 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 1,090 vehicles a day, roughly 5% of them trucks, projected to reach 1,100 by 2041. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 34.8 mi (56 km).

CarriesIronsp-Skull Vly R
CrossesDry Wash
Location5.8 MI N JCT Kirkland RD
RouteCounty Highway 0
StateArizona
Coordinates34.49333, -112.68661
Functional classRural Major Collector

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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,090 (2021)
Projected traffic1,100 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 Ironsp-Skull Vly R over Dry Wash built?

It was built in 1958, making it 67 years old in 2025.

What condition is Ironsp-Skull Vly R over Dry 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 Ironsp-Skull Vly R over Dry Wash carry?

About 1,090 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Ironsp-Skull Vly R over Dry Wash?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m).

Who owns Ironsp-Skull Vly R over Dry Wash?

It is owned by the County Highway Agency.