US Bridges

I 10; WB over Wash

Fair

Maricopa County, Arizona · 27.5 MI W JCT SR 85 · Structure no. 06435

Built
1968
57 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete Continuous
Length
74 ft
6 main spans
Daily traffic
12,062
2019 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 Maricopa County, Arizona. It was built in 1968, so it is 57 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 12,062 vehicles a day, roughly 40% of them trucks, projected to reach 12,072 by 2039. The structure is 74 ft (22.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; WB
CrossesWash
Location27.5 MI W JCT SR 85
RouteInterstate 10
CountyMaricopa County
StateArizona
Coordinates33.51253, -113.0205
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 inspectionJune 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 rating70 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length74 ft (22.6 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 traffic12,062 (2019)
Projected traffic12,072 by 2039
Trucks40%
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 1968, making it 57 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 June 2021.

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

About 12,062 vehicles per day (2019 count), of which roughly 40% are trucks.

How long is I 10; WB over Wash?

The structure is 74 ft (22.6 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.