US Bridges

US 93 over Dead Rat Wash

Good

Mohave County, Arizona · 12.3 MI N JCT SR 68 · Structure no. 04925

Built
1937
88 years old, rebuilt 1993
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
15,823
2022 count
Owner
State
State Highway Agency

About this bridge

US 93 over Dead Rat Wash is a concrete continuous culvert carrying US 93 over Dead Rat Wash in Mohave County, Arizona. It was built in 1937 and reconstructed in 1993, so it is 88 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 15,823 vehicles a day, roughly 26% of them trucks, projected to reach 15,833 by 2042. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 19.9 mi (32 km).

CarriesUS 93
CrossesDead Rat Wash
Location12.3 MI N JCT SR 68
RouteU.S. Route 93
StateArizona
Coordinates35.3712, -114.2408
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,823 (2022)
Projected traffic15,833 by 2042
Trucks26%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 93 over Dead Rat Wash built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1993.

What condition is US 93 over Dead Rat 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 October 2024.

How much traffic does US 93 over Dead Rat Wash carry?

About 15,823 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is US 93 over Dead Rat Wash?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns US 93 over Dead Rat Wash?

It is owned by the State Highway Agency.