US Bridges

47th Ave over Grand Canal

Fair

Maricopa County, Arizona · .5 MI N of Thomas RD · Structure no. 08518

Built
1959
66 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
42 ft
3 main spans
Daily traffic
3,700
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

47th Ave over Grand Canal is a concrete continuous culvert carrying 47th Ave over Grand Canal in Maricopa County, Arizona. It was built in 1959, so it is 66 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 3,700 vehicles a day, roughly 2% of them trucks, projected to reach 3,710 by 2040. The structure is 42 ft (12.8 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries47th Ave
CrossesGrand Canal
Location.5 MI N of Thomas RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4883, -112.1603
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.9 US tons
Inventory rating26.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length42 ft (12.8 m)
Longest span16 ft (4.9 m)
Deck width55 ft (16.8 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2020)
Projected traffic3,710 by 2040
Trucks2%
Lanes on structure2
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 47th Ave over Grand Canal built?

It was built in 1959, making it 66 years old in 2025.

What condition is 47th Ave 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 2024.

How much traffic does 47th Ave over Grand Canal carry?

About 3,700 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is 47th Ave over Grand Canal?

The structure is 42 ft (12.8 m) long with a longest span of 16 ft (4.9 m) and a deck 55 ft wide.

Who owns 47th Ave over Grand Canal?

It is owned by the City or Municipal Highway Agency.