US Bridges

I-17 over Scatter Wash South

Good

Maricopa County, Arizona · 7.4 MI S of SR 74 · Structure no. 07238

Built
2009
16 years old
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
28 ft
3 main spans
Daily traffic
135,704
2020 count
Owner
State
State Highway Agency

About this bridge

I-17 over Scatter Wash South is a concrete continuous culvert carrying I-17 over Scatter Wash South in Maricopa County, Arizona. It was built in 2009, so it is 16 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 135,704 vehicles a day, roughly 10% of them trucks, projected to reach 135,714 by 2021. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesI-17
CrossesScatter Wash South
Location7.4 MI S of SR 74
RouteInterstate 17
CountyMaricopa County
StateArizona
Functional classUrban Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135,704 (2020)
Projected traffic135,714 by 2021
Trucks10%
Lanes on structure17
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-17 over Scatter Wash South built?

It was built in 2009, making it 16 years old in 2025.

What condition is I-17 over Scatter Wash South 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 April 2022.

How much traffic does I-17 over Scatter Wash South carry?

About 135,704 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is I-17 over Scatter Wash South?

The structure is 28 ft (8.5 m) long with a longest span of 10 ft (3 m).

Who owns I-17 over Scatter Wash South?

It is owned by the State Highway Agency.