SR 71 over Wash

Good

Maricopa County, Arizona · 2.2 MI N JCT US 60 · Structure no. 04333

Built: 1950; 75 years old
Condition: Good; inspected May 2023
Type: Culvert; Concrete Continuous
Length: 26 ft; 4 main spans
Daily traffic: 730; 2021 count
Owner: State; State Highway Agency

About this bridge

SR 71 over Wash is a concrete continuous culvert carrying SR 71 over Wash in Maricopa County, Arizona. It was built in 1950, so it is 75 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 730 vehicles a day, roughly 16% of them trucks, projected to reach 740 by 2041. The structure is 26 ft (7.9 m) long and 34 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesSR 71

CrossesWash

Location2.2 MI N JCT US 60

RouteState Highway 71

CountyMaricopa County

StateArizona

Coordinates33.9717, -113.1415

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.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	7 Good	Some minor problems.

Last inspectionMay 2023

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

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 rating58 US tons

Inventory rating35.1 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans4

Design loadHS 20

Structure length26 ft (7.9 m)

Longest span6 ft (1.8 m)

Deck width34 ft (10.4 m)

Roadway width27 ft (8.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic730 (2021)

Projected traffic740 by 2041

Trucks16%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed60.3 mi (97 km)

TollOn a free road

National Highway SystemNo

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 SR 71 over Wash built?

It was built in 1950, making it 75 years old in 2025.

What condition is SR 71 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 May 2023.

How much traffic does SR 71 over Wash carry?

About 730 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is SR 71 over Wash?

The structure is 26 ft (7.9 m) long with a longest span of 6 ft (1.8 m) and a deck 34 ft wide.

Who owns SR 71 over Wash?

It is owned by the State Highway Agency.