US Bridges

I 8; EB over Mendell Wash

Fair

Pinal County, Arizona · 0.2 MI E JCT SR 84 · Structure no. 01064

Built
1961
64 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
142 ft
5 main spans
Daily traffic
2,566
2023 count
Owner
State
State Highway Agency

About this bridge

I 8; EB over Mendell Wash is a concrete continuous slab carrying I 8; EB over Mendell Wash in Pinal County, Arizona. It was built in 1961, so it is 64 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 5 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 2,566 vehicles a day, roughly 17% of them trucks, projected to reach 2,576 by 2042. The structure is 142 ft (43.3 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 8; EB
CrossesMendell Wash
Location0.2 MI E JCT SR 84
RouteInterstate 8
CountyPinal County
StateArizona
Coordinates32.8343, -112.1296
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span30 ft (9.1 m)
Deck width49 ft (15 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,566 (2023)
Projected traffic2,576 by 2042
Trucks17%
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 8; EB over Mendell Wash built?

It was built in 1961, making it 64 years old in 2025.

What condition is I 8; EB over Mendell 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 February 2024.

How much traffic does I 8; EB over Mendell Wash carry?

About 2,566 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is I 8; EB over Mendell Wash?

The structure is 142 ft (43.3 m) long with a longest span of 30 ft (9.1 m) and a deck 49 ft wide.

Who owns I 8; EB over Mendell Wash?

It is owned by the State Highway Agency.