US Bridges

I-10 EB over Wash

Fair

Pima County, Arizona · 4.2 MI W JCT SR 83 · Structure no. 00463

Built
1956
69 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
94 ft
4 main spans
Daily traffic
32,590
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 EB over Wash is a concrete continuous slab carrying I-10 EB over Wash in Pima County, Arizona. It was built in 1956, so it is 69 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 32,590 vehicles a day, roughly 19% of them trucks, projected to reach 32,600 by 2042. The structure is 94 ft (28.7 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 EB
CrossesWash
Location4.2 MI W JCT SR 83
RouteInterstate 10
CountyPima County
StateArizona
Coordinates32.0451, -110.74779
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span25 ft (7.6 m)
Deck width41 ft (12.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,590 (2023)
Projected traffic32,600 by 2042
Trucks19%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-10 EB over Wash built?

It was built in 1956, making it 69 years old in 2025.

What condition is I-10 EB 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 January 2024.

How much traffic does I-10 EB over Wash carry?

About 32,590 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I-10 EB over Wash?

The structure is 94 ft (28.7 m) long with a longest span of 25 ft (7.6 m) and a deck 41 ft wide.

Who owns I-10 EB over Wash?

It is owned by the State Highway Agency.