US Bridges

SR 74 over Wash

Good

Maricopa County, Arizona · 20.9 MI E JCT US 60 · Structure no. 06486

Built
1972
53 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
7,958
2021 count
Owner
State
State Highway Agency

About this bridge

SR 74 over Wash is a concrete continuous culvert carrying SR 74 over Wash in Maricopa County, Arizona. It was built in 1972, so it is 53 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 7,958 vehicles a day, roughly 7% of them trucks, projected to reach 7,968 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesSR 74
CrossesWash
Location20.9 MI E JCT US 60
RouteState Highway 74
CountyMaricopa County
StateArizona
Coordinates33.82783, -112.28228
Functional classRural Principal Arterial - Other

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 inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic7,958 (2021)
Projected traffic7,968 by 2041
Trucks7%
Lanes on structure3
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 74 over Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is SR 74 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 74 over Wash carry?

About 7,958 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR 74 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns SR 74 over Wash?

It is owned by the State Highway Agency.