US Bridges

Southern Ave over Rwcd Floodway

Fair

Maricopa County, Arizona · 0.8 MI E JCT Higley RD · Structure no. 09929

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
130 ft
4 main spans
Daily traffic
19,720
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Southern Ave over Rwcd Floodway is a concrete continuous slab carrying Southern Ave over Rwcd Floodway in Maricopa County, Arizona. It was built in 1987, so it is 38 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 19,720 vehicles a day, roughly 5% of them trucks, projected to reach 19,730 by 2042. The structure is 130 ft (39.6 m) long and 106 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSouthern Ave
CrossesRwcd Floodway
Location0.8 MI E JCT Higley RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.3939, -111.7057
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span35 ft (10.7 m)
Deck width106 ft (32.4 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic19,720 (2023)
Projected traffic19,730 by 2042
Trucks5%
Lanes on structure6
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 Southern Ave over Rwcd Floodway built?

It was built in 1987, making it 38 years old in 2025.

What condition is Southern Ave over Rwcd Floodway 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 October 2023.

How much traffic does Southern Ave over Rwcd Floodway carry?

About 19,720 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Southern Ave over Rwcd Floodway?

The structure is 130 ft (39.6 m) long with a longest span of 35 ft (10.7 m) and a deck 106 ft wide.

Who owns Southern Ave over Rwcd Floodway?

It is owned by the City or Municipal Highway Agency.