US Bridges

7th ST over Desert Lake Wash

Good

Maricopa County, Arizona · 0.2 MI N/ Carefree HWY · Structure no. 10050

Built
1996
29 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
135 ft
6 main spans
Daily traffic
8,607
2023 count
Owner
County
County Highway Agency

About this bridge

7th ST over Desert Lake Wash is a concrete continuous culvert carrying 7th ST over Desert Lake Wash in Maricopa County, Arizona. It was built in 1996, so it is 29 years old, younger 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 8,607 vehicles a day, roughly 10% of them trucks, projected to reach 8,617 by 2042. The structure is 135 ft (41.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries7th ST
CrossesDesert Lake Wash
Location0.2 MI N/ Carefree HWY
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.802, -112.0654
Functional classUrban Collector

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 inspectionDecember 2024
Inspection intervalevery 36 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 rating73.3 US tons
Inventory rating44.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,607 (2023)
Projected traffic8,617 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 7th ST over Desert Lake Wash built?

It was built in 1996, making it 29 years old in 2025.

What condition is 7th ST over Desert Lake 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 December 2024.

How much traffic does 7th ST over Desert Lake Wash carry?

About 8,607 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 7th ST over Desert Lake Wash?

The structure is 135 ft (41.1 m) long with a longest span of 21 ft (6.4 m).

Who owns 7th ST over Desert Lake Wash?

It is owned by the County Highway Agency.