US Bridges

Ironwood Drive over Adot Channel

Good

Maricopa County, Arizona · Ironwood & SR-24 · Structure no. 07371

Built
2022
3 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete Continuous
Length
28 ft
3 main spans
Daily traffic
3,000
2022 count
Owner
State
State Highway Agency

About this bridge

Ironwood Drive over Adot Channel is a concrete continuous culvert carrying Ironwood Drive over Adot Channel in Maricopa County, Arizona. It was built in 2022, so it is 3 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 3,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,010 by 2042. The structure is 28 ft (8.5 m) long and 224 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIronwood Drive
CrossesAdot Channel
LocationIronwood & SR-24
RouteState Highway 24
CountyMaricopa County
StateArizona
Coordinates33.2995, -111.5634
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable 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
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span8 ft (2.4 m)
Deck width224 ft (68.3 m)
Roadway width222 ft (67.7 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic3,000 (2022)
Projected traffic3,010 by 2042
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ironwood Drive over Adot Channel built?

It was built in 2022, making it 3 years old in 2025.

What condition is Ironwood Drive over Adot Channel 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 September 2022.

How much traffic does Ironwood Drive over Adot Channel carry?

About 3,000 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ironwood Drive over Adot Channel?

The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m) and a deck 224 ft wide.

Who owns Ironwood Drive over Adot Channel?

It is owned by the State Highway Agency.