US Bridges

Northern Pkwy over Wash

Good

Maricopa County, Arizona · 0.5 MI E of Dysart RD · Structure no. 11643

Built
2020
5 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete Continuous
Length
58 ft
5 main spans
Daily traffic
22,727
2022 count
Owner
County
County Highway Agency

About this bridge

Northern Pkwy over Wash is a concrete continuous culvert carrying Northern Pkwy over Wash in Maricopa County, Arizona. It was built in 2020, so it is 5 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 22,727 vehicles a day, roughly 20% of them trucks, projected to reach 22,737 by 2042. The structure is 58 ft (17.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNorthern Pkwy
CrossesWash
Location0.5 MI E of Dysart RD
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.5507, -112.333
Functional classUrban Other Principal Arterial

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 2023
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 alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating58.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,727 (2022)
Projected traffic22,737 by 2042
Trucks20%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Northern Pkwy over Wash built?

It was built in 2020, making it 5 years old in 2025.

What condition is Northern Pkwy 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 2023.

How much traffic does Northern Pkwy over Wash carry?

About 22,727 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is Northern Pkwy over Wash?

The structure is 58 ft (17.7 m) long with a longest span of 11 ft (3.4 m).

Who owns Northern Pkwy over Wash?

It is owned by the County Highway Agency.