US Bridges

Southern Ave over Drainage Ditch

Fair

Maricopa County, Arizona · Just to the W of Hawes RD · Structure no. 10435

Built
1997
28 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
14,646
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Southern Ave over Drainage Ditch is a concrete continuous culvert carrying Southern Ave over Drainage Ditch in Maricopa County, Arizona. It was built in 1997, so it is 28 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 14,646 vehicles a day, roughly 2% of them trucks, projected to reach 14,656 by 2039. The structure is 26 ft (7.9 m) long and 113 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSouthern Ave
CrossesDrainage Ditch
LocationJust to the W of Hawes RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.3932, -111.6503
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width113 ft (34.4 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,646 (2019)
Projected traffic14,656 by 2039
Trucks2%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Southern Ave over Drainage Ditch built?

It was built in 1997, making it 28 years old in 2025.

What condition is Southern Ave over Drainage Ditch 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 July 2023.

How much traffic does Southern Ave over Drainage Ditch carry?

About 14,646 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Southern Ave over Drainage Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 113 ft wide.

Who owns Southern Ave over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.