US 93 over Natural Corral Wash

Fair

Mohave County, Arizona · 30.3 MI S JCT I-40 · Structure no. 00639

Built: 1961; 64 years old
Condition: Fair; inspected December 2024
Type: Slab; Concrete Continuous
Length: 172 ft; 6 main spans
Daily traffic: 10,203; 2022 count
Owner: State; State Highway Agency

About this bridge

US 93 over Natural Corral Wash is a concrete continuous slab carrying US 93 over Natural Corral Wash in Mohave 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 10,203 vehicles a day, roughly 24% of them trucks, projected to reach 10,213 by 2042. The structure is 172 ft (52.4 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesUS 93

CrossesNatural Corral Wash

Location30.3 MI S JCT I-40

RouteU.S. Route 93

CountyMohave County

StateArizona

Coordinates34.7362, -113.6153

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	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionDecember 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourScour critical; foundations unstable for calculated scour conditions

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Deck geometry3: Basically intolerable, requiring high priority of corrective action

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating41 US tons

Inventory rating24 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans6

Design loadHS 20

Structure length172 ft (52.4 m)

Longest span30 ft (9.1 m)

Deck width35 ft (10.7 m)

Roadway width32 ft (9.7 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,203 (2022)

Projected traffic10,213 by 2042

Trucks24%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed98.8 mi (159 km)

TollOn a free road

National Highway SystemYes

Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency

Maintained byState Highway Agency

Historic statusNot eligible for the National Register of Historic Places

Work proposedReplacement because of substandard load-carrying capacity or roadway geometry

Estimated improvement cost$1,000 (2022 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Natural Corral Wash built?

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

What condition is US 93 over Natural Corral 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 December 2024.

How much traffic does US 93 over Natural Corral Wash carry?

About 10,203 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is US 93 over Natural Corral Wash?

The structure is 172 ft (52.4 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns US 93 over Natural Corral Wash?

It is owned by the State Highway Agency.