US Bridges

129th Avenue over Drainage Channel

Good

Maricopa County, Arizona · N/ Camelback RD · Structure no. 10368

Built
2001
24 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
750
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

129th Avenue over Drainage Channel is a concrete continuous culvert carrying 129th Avenue over Drainage Channel in Maricopa County, Arizona. It was built in 2001, so it is 24 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 750 vehicles a day, roughly 1% of them trucks, projected to reach 760 by 2041. The structure is 26 ft (7.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries129th Avenue
CrossesDrainage Channel
LocationN/ Camelback RD
RouteCounty Highway 0
StateArizona
Coordinates33.50781, -112.33734
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2021)
Projected traffic760 by 2041
Trucks1%
Lanes on structure2
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 129th Avenue over Drainage Channel built?

It was built in 2001, making it 24 years old in 2025.

What condition is 129th Avenue over Drainage Channel 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 November 2021.

How much traffic does 129th Avenue over Drainage Channel carry?

About 750 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 129th Avenue over Drainage Channel?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 36 ft wide.

Who owns 129th Avenue over Drainage Channel?

It is owned by the City or Municipal Highway Agency.