US Bridges

56th ST over Wash

Good

Maricopa County, Arizona · 0.25 MI N of Dixileta · Structure no. 11546

Built
2017
8 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
46 ft
4 main spans
Daily traffic
4,987
2023 count
Owner
County
County Highway Agency

About this bridge

56th ST over Wash is a concrete continuous culvert carrying 56th ST over Wash in Maricopa County, Arizona. It was built in 2017, so it is 8 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 4,987 vehicles a day, roughly 2% of them trucks, projected to reach 4,997 by 2042. The structure is 46 ft (14 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries56th ST
CrossesWash
Location0.25 MI N of Dixileta
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.7594, -111.9608
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 protection8 Very GoodNo problems noted.
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
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 rating59.4 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length46 ft (14 m)
Longest span11 ft (3.4 m)
Deck width41 ft (12.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,987 (2023)
Projected traffic4,997 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 56th ST over Wash built?

It was built in 2017, making it 8 years old in 2025.

What condition is 56th 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 December 2024.

How much traffic does 56th ST over Wash carry?

About 4,987 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is 56th ST over Wash?

The structure is 46 ft (14 m) long with a longest span of 11 ft (3.4 m) and a deck 41 ft wide.

Who owns 56th ST over Wash?

It is owned by the County Highway Agency.