US Bridges

Thompson Peak Pkwy over Wash

Fair

Maricopa County, Arizona · 0.5 MI E JCT Pima RD · Structure no. 10483

Built
1997
28 years old
Condition
Fair
inspected February 2022
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
4,100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thompson Peak Pkwy over Wash is a concrete culvert carrying Thompson Peak Pkwy over Wash in Maricopa County, Arizona. It was built in 1997, so it is 28 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 5 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 4,100 vehicles a day, roughly 2% of them trucks, projected to reach 4,110 by 2040. The structure is 28 ft (8.5 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesThompson Peak Pkwy
CrossesWash
Location0.5 MI E JCT Pima RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.676, -111.8868
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to 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
DeckNot applicable
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width54 ft (16.6 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2020)
Projected traffic4,110 by 2040
Trucks2%
Lanes on structure3
Traffic directionOne-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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Thompson Peak Pkwy over Wash built?

It was built in 1997, making it 28 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 February 2022.

How much traffic does Thompson Peak Pkwy over Wash carry?

About 4,100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Thompson Peak Pkwy over Wash?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 54 ft wide.

Who owns Thompson Peak Pkwy over Wash?

It is owned by the City or Municipal Highway Agency.