US Bridges

Dunlap Avenue over Arizona Canal

Fair

Maricopa County, Arizona · 0.13 MI E of 7th Street · Structure no. 09207

Built
1965
60 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
139 ft
4 main spans
Daily traffic
29,095
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dunlap Avenue over Arizona Canal is a concrete continuous slab carrying Dunlap Avenue over Arizona Canal in Maricopa County, Arizona. It was built in 1965, so it is 60 years old, older 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 29,095 vehicles a day, roughly 1% of them trucks, projected to reach 29,105 by 2041. The structure is 139 ft (42.4 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDunlap Avenue
CrossesArizona Canal
Location0.13 MI E of 7th Street
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.5676, -112.0803
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating36.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span38 ft (11.6 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,095 (2021)
Projected traffic29,105 by 2041
Trucks1%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dunlap Avenue over Arizona Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is Dunlap Avenue over Arizona Canal 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 Dunlap Avenue over Arizona Canal carry?

About 29,095 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Dunlap Avenue over Arizona Canal?

The structure is 139 ft (42.4 m) long with a longest span of 38 ft (11.6 m) and a deck 76 ft wide.

Who owns Dunlap Avenue over Arizona Canal?

It is owned by the City or Municipal Highway Agency.