US 160 over Church Rock Wash

Fair

Navajo County, Arizona · 38.9 MI E JCT SR 98 · Structure no. 00747

Built: 1961; 64 years old
Condition: Fair; inspected September 2024
Type: Slab; Concrete Continuous
Length: 122 ft; 3 main spans
Daily traffic: 4,533; 2022 count
Owner: State; State Highway Agency

About this bridge

US 160 over Church Rock Wash is a concrete continuous slab carrying US 160 over Church Rock Wash in Navajo County, Arizona. It was built in 1961, so it is 64 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 4,533 vehicles a day, roughly 11% of them trucks, projected to reach 4,543 by 2042. The structure is 122 ft (37.2 m) long and 38 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

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CarriesUS 160

CrossesChurch Rock Wash

Location38.9 MI E JCT SR 98

RouteU.S. Route 160

CountyNavajo County

StateArizona

Coordinates36.72671, -110.12364

Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionSeptember 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourScour critical; foundations unstable for calculated scour conditions

Structural evaluation6: Equal to present minimum criteria

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating75 US tons

Inventory rating45 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length122 ft (37.2 m)

Longest span47 ft (14.3 m)

Deck width38 ft (11.6 m)

Roadway width34 ft (10.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,533 (2022)

Projected traffic4,543 by 2042

Trucks11%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed47.8 mi (77 km)

TollOn a free road

National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency

Maintained byState 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 US 160 over Church Rock Wash built?

It was built in 1961, making it 64 years old in 2025.

What condition is US 160 over Church Rock 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 September 2024.

How much traffic does US 160 over Church Rock Wash carry?

About 4,533 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is US 160 over Church Rock Wash?

The structure is 122 ft (37.2 m) long with a longest span of 47 ft (14.3 m) and a deck 38 ft wide.

Who owns US 160 over Church Rock Wash?

It is owned by the State Highway Agency.