US Bridges

Thunderbird Road over Dry Wash

Good

Maricopa County, Arizona · 0.25 MI E of 40th Street · Structure no. 09632

Built
1976
49 years old
Condition
Good
inspected January 2022
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
24,183
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thunderbird Road over Dry Wash is a concrete continuous culvert carrying Thunderbird Road over Dry Wash in Maricopa County, Arizona. It was built in 1976, so it is 49 years old, older 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 24,183 vehicles a day, roughly 5% of them trucks, projected to reach 25,183 by 2030. The structure is 26 ft (7.9 m) long and 72 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesThunderbird Road
CrossesDry Wash
Location0.25 MI E of 40th Street
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.6118, -111.9918
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.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width72 ft (22 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,183 (2012)
Projected traffic25,183 by 2030
Trucks5%
Lanes on structure5
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

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Thunderbird Road over Dry Wash built?

It was built in 1976, making it 49 years old in 2025.

What condition is Thunderbird Road over Dry 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 2022.

How much traffic does Thunderbird Road over Dry Wash carry?

About 24,183 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Thunderbird Road over Dry Wash?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 72 ft wide.

Who owns Thunderbird Road over Dry Wash?

It is owned by the City or Municipal Highway Agency.