US Bridges

IRR SR 87 over Wash

Good

Pinal County, Arizona · 4.7 MI SE JCT SR 587 · Structure no. 04640

Built
1932
93 years old, rebuilt 1963
Condition
Good
inspected October 2021
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
3,994
2020 count
Owner
State
State Highway Agency

About this bridge

IRR SR 87 over Wash is a concrete continuous culvert carrying IRR SR 87 over Wash in Pinal County, Arizona. It was built in 1932 and reconstructed in 1963, so it is 93 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 3,994 vehicles a day, roughly 10% of them trucks, projected to reach 4,004 by 2040. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesIRR SR 87
CrossesWash
Location4.7 MI SE JCT SR 587
RouteState Highway 87
CountyPinal County
StateArizona
Coordinates33.1596, -111.7805
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 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 traffic3,994 (2020)
Projected traffic4,004 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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 SR 87 over Wash built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1963.

What condition is IRR SR 87 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 October 2021.

How much traffic does IRR SR 87 over Wash carry?

About 3,994 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is IRR SR 87 over Wash?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns IRR SR 87 over Wash?

It is owned by the State Highway Agency.