I-10 WB over Wash

Fair

La Paz County, Arizona · 5.9 MI E JCT US 60 · Structure no. 01204

Built: 1967; 58 years old
Condition: Fair; inspected January 2024
Type: Slab; Concrete Continuous
Length: 164 ft; 5 main spans
Daily traffic: 13,658; 2022 count
Owner: State; State Highway Agency

About this bridge

I-10 WB over Wash is a concrete continuous slab carrying I-10 WB over Wash in La Paz County, Arizona. It was built in 1967, so it is 58 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 13,658 vehicles a day, roughly 47% of them trucks, projected to reach 13,668 by 2042. The structure is 164 ft (50 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 WB

CrossesWash

Location5.9 MI E JCT US 60

RouteInterstate 10

CountyLa Paz County

StateArizona

Coordinates33.6498, -113.9092

Functional classRural Principal Arterial - Interstate

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

Last inspectionJanuary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourCountermeasures installed to correct a previously existing problem

Structural evaluation6: Equal to present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating72 US tons

Inventory rating43 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans5

Design loadHS 20

Structure length164 ft (50 m)

Longest span35 ft (10.7 m)

Deck width41 ft (12.4 m)

Roadway width38 ft (11.6 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,658 (2022)

Projected traffic13,668 by 2042

Trucks47%

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 I-10 WB over Wash built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-10 WB 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 January 2024.

How much traffic does I-10 WB over Wash carry?

About 13,658 vehicles per day (2022 count), of which roughly 47% are trucks.

How long is I-10 WB over Wash?

The structure is 164 ft (50 m) long with a longest span of 35 ft (10.7 m) and a deck 41 ft wide.

Who owns I-10 WB over Wash?

It is owned by the State Highway Agency.