US Bridges

Thompson Peak Pkwy over Wash

Fair

Maricopa County, Arizona · 1300 N of Bell RD · Structure no. 11251

Built
2006
19 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
68 ft
3 main spans
Daily traffic
14,200
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 2006, so it is 19 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 14,200 vehicles a day, roughly 5% of them trucks, projected to reach 14,210 by 2038. The structure is 68 ft (20.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesThompson Peak Pkwy
CrossesWash
Location1300 N of Bell RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.6439, -111.8612
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating55 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,200 (2018)
Projected traffic14,210 by 2038
Trucks5%
Lanes on structure4
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

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 2006, making it 19 years old in 2025.

What condition is Thompson Peak Pkwy over Wash in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Thompson Peak Pkwy over Wash carry?

About 14,200 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Thompson Peak Pkwy over Wash?

The structure is 68 ft (20.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Thompson Peak Pkwy over Wash?

It is owned by the City or Municipal Highway Agency.