US Bridges

7th Street over Grand Canal

Fair

Maricopa County, Arizona · 0.46 MI S of Camelback · Structure no. 09187

Built
1946
79 years old, rebuilt 1961
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
36,266
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

7th Street over Grand Canal is a concrete continuous slab carrying 7th Street over Grand Canal in Maricopa County, Arizona. It was built in 1946 and reconstructed in 1961, so it is 79 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 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 36,266 vehicles a day, roughly 1% of them trucks, projected to reach 36,276 by 2041. The structure is 38 ft (11.6 m) long and 90 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries7th Street
CrossesGrand Canal
Location0.46 MI S of Camelback
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.5024, -112.0651
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 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 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 rating39.4 US tons
Inventory rating23.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span18 ft (5.5 m)
Deck width90 ft (27.4 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,266 (2021)
Projected traffic36,276 by 2041
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 7th Street over Grand Canal built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1961.

What condition is 7th Street over Grand 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 2023.

How much traffic does 7th Street over Grand Canal carry?

About 36,266 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 7th Street over Grand Canal?

The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.5 m) and a deck 90 ft wide.

Who owns 7th Street over Grand Canal?

It is owned by the City or Municipal Highway Agency.