US 93 SB over Wash

Fair

Mohave County, Arizona · 41.2 MI N JCT SR 68 · Structure no. 04905

Built: 1936; 89 years old, rebuilt 1989
Condition: Fair; inspected October 2024
Type: Culvert; Concrete Continuous
Length: 26 ft; 3 main spans
Daily traffic: 8,855; 2022 count
Owner: State; State Highway Agency

About this bridge

US 93 SB over Wash is a concrete continuous culvert carrying US 93 SB over Wash in Mohave County, Arizona. It was built in 1936 and reconstructed in 1989, so it is 89 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 8,855 vehicles a day, roughly 28% of them trucks, projected to reach 8,865 by 2042. The structure is 26 ft (7.9 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 93 SB

CrossesWash

Location41.2 MI N JCT SR 68

RouteU.S. Route 93

CountyMohave County

StateArizona

Coordinates35.7426, -114.4978

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
Channel and channel protection	7 Good	Some minor problems.
Culvert	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionOctober 2024

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry9: Superior to present desirable criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating54 US tons

Inventory rating32 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length26 ft (7.9 m)

Longest span8 ft (2.4 m)

Deck width74 ft (22.6 m)

Roadway width72 ft (21.9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,855 (2022)

Projected traffic8,865 by 2042

Trucks28%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.2 mi (2 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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 SB over Wash built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1989.

What condition is US 93 SB over 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 2024.

How much traffic does US 93 SB over Wash carry?

About 8,855 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 93 SB over Wash?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 74 ft wide.

Who owns US 93 SB over Wash?

It is owned by the State Highway Agency.