Thompson Peak Pkwy over Wash

Good

Maricopa County, Arizona · 600 N of Windgate Pass · Structure no. 11260

Built: 2007; 18 years old
Condition: Good; inspected January 2025
Type: Culvert; Concrete Continuous
Length: 57 ft; 2 main spans
Daily traffic: 14,300; 2018 count
Owner: City; City or Municipal Highway Agency

About this bridge

Thompson Peak Pkwy over Wash is a concrete continuous culvert carrying Thompson Peak Pkwy over Wash in Maricopa County, Arizona. It was built in 2007, so it is 18 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 14,300 vehicles a day, roughly 5% of them trucks, projected to reach 14,310 by 2038. The structure is 57 ft (17.4 m) long.

Location

No coordinates are recorded for this structure.

CarriesThompson Peak Pkwy

CrossesWash

Location600 N of Windgate Pass

RouteCity Street 0

CountyMaricopa County

StateArizona

Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	8 Very Good	No problems noted.
Culvert	7 Good	Some minor problems.

Last inspectionJanuary 2025

Inspection intervalevery 48 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 rating99 US tons

Inventory rating99 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadHS 20

Structure length57 ft (17.4 m)

Longest span28 ft (8.5 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,300 (2018)

Projected traffic14,310 by 2038

Trucks5%

Lanes on structure3

Traffic directionTwo-way traffic

CarriesHighway and pedestrian

CrossesWaterway

Detour if closed—

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—

NavigationNo navigation control on waterway

Frequently asked questions

When was Thompson Peak Pkwy over Wash built?

It was built in 2007, making it 18 years old in 2025.

What condition is Thompson Peak 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 January 2025.

How much traffic does Thompson Peak Pkwy over Wash carry?

About 14,300 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Thompson Peak Pkwy over Wash?

The structure is 57 ft (17.4 m) long with a longest span of 28 ft (8.5 m).

Who owns Thompson Peak Pkwy over Wash?

It is owned by the City or Municipal Highway Agency.