US Bridges

IRR I 10; EB & WB over Wash

Good

Pinal County, Arizona · 1.8 MI South JCT SR 187 · Structure no. 05448

Built
1967
58 years old, rebuilt 2011
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
42,223
2017 count
Owner
State
State Highway Agency

About this bridge

IRR I 10; EB & WB over Wash is a concrete continuous culvert carrying IRR I 10; EB & WB over Wash in Pinal County, Arizona. It was built in 1967 and reconstructed in 2011, so it is 58 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 42,223 vehicles a day, roughly 19% of them trucks, projected to reach 42,233 by 2037. The structure is 22 ft (6.7 m) long and 238 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesIRR I 10; EB & WB
CrossesWash
Location1.8 MI South JCT SR 187
RouteInterstate 10
CountyPinal County
StateArizona
Coordinates32.9819, -111.7359
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 inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width238 ft (72.5 m)
Roadway width236 ft (71.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,223 (2017)
Projected traffic42,233 by 2037
Trucks19%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 IRR I 10; EB & WB over Wash built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2011.

What condition is IRR I 10; 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 March 2023.

How much traffic does IRR I 10; EB & WB over Wash carry?

About 42,223 vehicles per day (2017 count), of which roughly 19% are trucks.

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

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 238 ft wide.

Who owns IRR I 10; EB & WB over Wash?

It is owned by the State Highway Agency.