US Bridges

I 10; E & W over Wash

Good

Maricopa County, Arizona · 26.9 MI W JCT I 17 · Structure no. 06661

Built
1978
47 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
62 ft
5 main spans
Daily traffic
114,791
2021 count
Owner
State
State Highway Agency

About this bridge

I 10; E & W over Wash is a concrete continuous culvert carrying I 10; E & W over Wash in Maricopa County, Arizona. It was built in 1978, so it is 47 years old, younger 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 114,791 vehicles a day, roughly 4% of them trucks, projected to reach 114,801 by 2041. The structure is 62 ft (18.9 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesI 10; E & W
CrossesWash
Location26.9 MI W JCT I 17
RouteInterstate 10
CountyMaricopa County
StateArizona
Coordinates33.4625, -112.46772
Functional classUrban Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
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 rating86 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length62 ft (18.9 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 traffic114,791 (2021)
Projected traffic114,801 by 2041
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 10; E & W over Wash built?

It was built in 1978, making it 47 years old in 2025.

What condition is I 10; E & W over 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 January 2023.

How much traffic does I 10; E & W over Wash carry?

About 114,791 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is I 10; E & W over Wash?

The structure is 62 ft (18.9 m) long with a longest span of 10 ft (3 m).

Who owns I 10; E & W over Wash?

It is owned by the State Highway Agency.