US Bridges

I 10; EB over Wash

Fair

La Paz County, Arizona · 39.5 MI East of JCT US 60 · Structure no. 06231

Built
1972
53 years old
Condition
Fair
inspected November 2021
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
11,331
2016 count
Owner
State
State Highway Agency

About this bridge

I 10; EB over Wash is a concrete continuous culvert carrying I 10; EB over Wash in La Paz County, Arizona. It was built in 1972, so it is 53 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 11,331 vehicles a day, roughly 24% of them trucks, projected to reach 11,341 by 2036. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; EB
CrossesWash
Location39.5 MI East of JCT US 60
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.566, -113.3347
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.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 traffic11,331 (2016)
Projected traffic11,341 by 2036
Trucks24%
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; EB over Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is I 10; EB 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 November 2021.

How much traffic does I 10; EB over Wash carry?

About 11,331 vehicles per day (2016 count), of which roughly 24% are trucks.

How long is I 10; EB over Wash?

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

Who owns I 10; EB over Wash?

It is owned by the State Highway Agency.