US Bridges

I 10; WB over Wash

Fair

La Paz County, Arizona · 17.0 MI East of JCT US 60 · Structure no. 06276

Built
1967
58 years old, rebuilt 1972
Condition
Fair
inspected March 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
12,103
2020 count
Owner
State
State Highway Agency

About this bridge

I 10; WB over Wash is a concrete continuous culvert carrying I 10; WB over Wash in La Paz County, Arizona. It was built in 1967 and reconstructed in 1972, 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 12,103 vehicles a day, roughly 12% of them trucks, projected to reach 12,113 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; WB
CrossesWash
Location17.0 MI East of JCT US 60
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.624, -113.7183
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2022
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 rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic12,103 (2020)
Projected traffic12,113 by 2040
Trucks12%
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. It was reconstructed in 1972.

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 March 2022.

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

About 12,103 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is I 10; WB over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns I 10; WB over Wash?

It is owned by the State Highway Agency.