US Bridges

81st ST over Wash

Good

Maricopa County, Arizona · 1 MI W of N Pima RD · Structure no. 11292

Built
1994
31 years old
Condition
Good
inspected March 2021
Type
Culvert
Concrete Continuous
Length
131 ft
5 main spans
Daily traffic
110
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

81st ST over Wash is a concrete continuous culvert carrying 81st ST over Wash in Maricopa County, Arizona. It was built in 1994, so it is 31 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 110 vehicles a day, roughly 1% of them trucks, projected to reach 120 by 2041. The structure is 131 ft (39.9 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries81st ST
CrossesWash
Location1 MI W of N Pima RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.8031, -111.9051
Functional classUrban 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 inspectionMarch 2021
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 adequacy8: Equal to present desirable 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 spans5
Design loadHS 20
Structure length131 ft (39.9 m)
Longest span6 ft (1.8 m)
Deck width60 ft (18.3 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic110 (2021)
Projected traffic120 by 2041
Trucks1%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 81st ST over Wash built?

It was built in 1994, making it 31 years old in 2025.

What condition is 81st ST 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 March 2021.

How much traffic does 81st ST over Wash carry?

About 110 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 81st ST over Wash?

The structure is 131 ft (39.9 m) long with a longest span of 6 ft (1.8 m) and a deck 60 ft wide.

Who owns 81st ST over Wash?

It is owned by the City or Municipal Highway Agency.