US Bridges

I 8; EB & WB over Wash

Good

Maricopa County, Arizona · 22.6 MI E JCT SR 85 · Structure no. 05289

Built
1958
67 years old, rebuilt 1980
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
7,296
2021 count
Owner
State
State Highway Agency

About this bridge

I 8; EB & WB over Wash is a concrete continuous culvert carrying I 8; EB & WB over Wash in Maricopa County, Arizona. It was built in 1958 and reconstructed in 1980, so it is 67 years old, older 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 7,296 vehicles a day, roughly 46% of them trucks, projected to reach 7,306 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesI 8; EB & WB
CrossesWash
Location22.6 MI E JCT SR 85
RouteInterstate 8
CountyMaricopa County
StateArizona
Coordinates32.8523, -112.3638
Functional classRural 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 protection7 GoodSome minor problems.
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 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 traffic7,296 (2021)
Projected traffic7,306 by 2041
Trucks46%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 8; EB & WB over Wash built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1980.

What condition is I 8; EB & WB 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 8; EB & WB over Wash carry?

About 7,296 vehicles per day (2021 count), of which roughly 46% are trucks.

How long is I 8; EB & WB over Wash?

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

Who owns I 8; EB & WB over Wash?

It is owned by the State Highway Agency.