US Bridges

I10 EB & WB & Ramp over Wash

Fair

Pinal County, Arizona · 5.5 MI SE JCT SR 187 · Structure no. 05468

Built
1968
57 years old, rebuilt 1975
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
41,481
2018 count
Owner
State
State Highway Agency

About this bridge

I10 EB & WB & Ramp over Wash is a concrete continuous culvert carrying I10 EB & WB & Ramp over Wash in Pinal County, Arizona. It was built in 1968 and reconstructed in 1975, so it is 57 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 41,481 vehicles a day, roughly 15% of them trucks, projected to reach 41,491 by 2038. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI10 EB & WB & Ramp
CrossesWash
Location5.5 MI SE JCT SR 187
RouteInterstate 10
CountyPinal County
StateArizona
Coordinates32.9362, -111.6993
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating39 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length45 ft (13.7 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 traffic41,481 (2018)
Projected traffic41,491 by 2038
Trucks15%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 I10 EB & WB & Ramp over Wash built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1975.

What condition is I10 EB & WB & Ramp 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 March 2023.

How much traffic does I10 EB & WB & Ramp over Wash carry?

About 41,481 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is I10 EB & WB & Ramp over Wash?

The structure is 45 ft (13.7 m) long with a longest span of 10 ft (3 m).

Who owns I10 EB & WB & Ramp over Wash?

It is owned by the State Highway Agency.