US Bridges

25th Avenue over Arizona Canal

Good

Maricopa County, Arizona · .25 MI N of Dunlap RD · Structure no. 08508

Built
1979
46 years old, rebuilt 2023
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
640
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

25th Avenue over Arizona Canal is a prestressed concrete box beam or girders - multiple carrying 25th Avenue over Arizona Canal in Maricopa County, Arizona. It was built in 1979 and reconstructed in 2023, so it is 46 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 640 vehicles a day, roughly 8% of them trucks, projected to reach 650 by 2042. The structure is 68 ft (20.7 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries25th Avenue
CrossesArizona Canal
Location.25 MI N of Dunlap RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.5712, -112.1123
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.1 US tons
Inventory rating41.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span65 ft (19.8 m)
Deck width84 ft (25.5 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic640 (2023)
Projected traffic650 by 2042
Trucks8%
Lanes on structure3
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 25th Avenue over Arizona Canal built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2023.

What condition is 25th Avenue over Arizona Canal 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 2024.

How much traffic does 25th Avenue over Arizona Canal carry?

About 640 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is 25th Avenue over Arizona Canal?

The structure is 68 ft (20.7 m) long with a longest span of 65 ft (19.8 m) and a deck 84 ft wide.

Who owns 25th Avenue over Arizona Canal?

It is owned by the City or Municipal Highway Agency.