US Bridges

I 10; EB & WB over Wash

Fair

Maricopa County, Arizona · 22.9 MI West of JCT SR 85 · Structure no. 06448

Built
1970
55 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete Continuous
Length
74 ft
6 main spans
Daily traffic
21,925
2015 count
Owner
State
State Highway Agency

About this bridge

I 10; EB & WB over Wash is a concrete continuous culvert carrying I 10; EB & WB over Wash in Maricopa County, Arizona. It was built in 1970, so it is 55 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 21,925 vehicles a day, roughly 25% of them trucks, projected to reach 21,935 by 2035. The structure is 74 ft (22.6 m) long. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesI 10; EB & WB
CrossesWash
Location22.9 MI West of JCT SR 85
RouteInterstate 10
CountyMaricopa County
StateArizona
Coordinates33.49885, -112.94359
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 adequacy7: Better than present minimum 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 spans6
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,925 (2015)
Projected traffic21,935 by 2035
Trucks25%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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$3,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 10; EB & WB over Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is I 10; EB & 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; EB & WB over Wash carry?

About 21,925 vehicles per day (2015 count), of which roughly 25% are trucks.

How long is I 10; EB & WB over Wash?

The structure is 74 ft (22.6 m) long with a longest span of 11 ft (3.5 m).

Who owns I 10; EB & WB over Wash?

It is owned by the State Highway Agency.