US Bridges

29th Avenue over Az Canal Div Channel

Fair

Maricopa County, Arizona · South of Metro Center · Structure no. 08989

Built
1985
40 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
114 ft
2 main spans
Daily traffic
5,431
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

29th Avenue over Az Canal Div Channel is a prestressed concrete stringer/multi-beam or girder carrying 29th Avenue over Az Canal Div Channel in Maricopa County, Arizona. It was built in 1985, so it is 40 years old, younger 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 5,431 vehicles a day, roughly 1% of them trucks, projected to reach 5,441 by 2042. The structure is 114 ft (34.8 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries29th Avenue
CrossesAz Canal Div Channel
LocationSouth of Metro Center
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.5708, -112.1207
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.1 US tons
Inventory rating34.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length114 ft (34.8 m)
Longest span56 ft (17 m)
Deck width58 ft (17.7 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,431 (2023)
Projected traffic5,441 by 2042
Trucks1%
Lanes on structure4
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 29th Avenue over Az Canal Div Channel built?

It was built in 1985, making it 40 years old in 2025.

What condition is 29th Avenue over Az Canal Div Channel 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 November 2023.

How much traffic does 29th Avenue over Az Canal Div Channel carry?

About 5,431 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is 29th Avenue over Az Canal Div Channel?

The structure is 114 ft (34.8 m) long with a longest span of 56 ft (17 m) and a deck 58 ft wide.

Who owns 29th Avenue over Az Canal Div Channel?

It is owned by the City or Municipal Highway Agency.