US Bridges

US 93 NB over Kabba Wash

Good

Mohave County, Arizona · 6.3 MI S JCT I-40 · Structure no. 00492

Built
1958
67 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
141 ft
5 main spans
Daily traffic
4,899
2021 count
Owner
State
State Highway Agency

About this bridge

US 93 NB over Kabba Wash is a concrete continuous slab carrying US 93 NB over Kabba Wash in Mohave 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 4,899 vehicles a day, roughly 23% of them trucks, projected to reach 4,909 by 2041. The structure is 141 ft (43 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 93 NB
CrossesKabba Wash
Location6.3 MI S JCT I-40
RouteU.S. Route 93
CountyMohave County
StateArizona
Coordinates35.077, -113.6653
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 spans5
Design loadHS 20
Structure length141 ft (43 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,899 (2021)
Projected traffic4,909 by 2041
Trucks23%
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 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 NB over Kabba Wash built?

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

What condition is US 93 NB over Kabba 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 November 2024.

How much traffic does US 93 NB over Kabba Wash carry?

About 4,899 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is US 93 NB over Kabba Wash?

The structure is 141 ft (43 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns US 93 NB over Kabba Wash?

It is owned by the State Highway Agency.