US Bridges

Kirkland Road over Skull Valley Wash

Fair

Yavapai County, Arizona · 4.0 MI W JCT SR 89 · Structure no. 09112

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
270 ft
8 main spans
Daily traffic
1,714
2021 count
Owner
County
County Highway Agency

About this bridge

Kirkland Road over Skull Valley Wash is a concrete continuous slab carrying Kirkland Road over Skull Valley Wash in Yavapai County, Arizona. It was built in 1966, so it is 59 years old, older than the Arizona average of 47.8 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 1,714 vehicles a day, roughly 5% of them trucks, projected to reach 1,724 by 2041. The structure is 270 ft (82.3 m) long and 34 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

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CarriesKirkland Road
CrossesSkull Valley Wash
Location4.0 MI W JCT SR 89
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.416, -112.7098
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span35 ft (10.7 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,714 (2021)
Projected traffic1,724 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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 Kirkland Road over Skull Valley Wash built?

It was built in 1966, making it 59 years old in 2025.

What condition is Kirkland Road over Skull 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 October 2023.

How much traffic does Kirkland Road over Skull Valley Wash carry?

About 1,714 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Kirkland Road over Skull Valley Wash?

The structure is 270 ft (82.3 m) long with a longest span of 35 ft (10.7 m) and a deck 34 ft wide.

Who owns Kirkland Road over Skull Valley Wash?

It is owned by the County Highway Agency.