US Bridges

181st Ave over Wash

Good

Maricopa County, Arizona · North of Camelback RD · Structure no. 11729

Built
2023
2 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
1,500
2024 count
Owner
County
County Highway Agency

About this bridge

181st Ave over Wash is a concrete continuous culvert carrying 181st Ave over Wash in Maricopa County, Arizona. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 2% of them trucks, projected to reach 1,510 by 2042. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries181st Ave
CrossesWash
LocationNorth of Camelback RD
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.5085, -112.4485
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 36 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating105.1 US tons
Inventory rating62.9 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 traffic1,500 (2024)
Projected traffic1,510 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 181st Ave over Wash built?

It was built in 2023, making it 2 years old in 2025.

What condition is 181st Ave 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 December 2024.

How much traffic does 181st Ave over Wash carry?

About 1,500 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is 181st Ave over Wash?

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

Who owns 181st Ave over Wash?

It is owned by the County Highway Agency.