US Bridges

I-17 over Wash

Good

Maricopa County, Arizona · 0.8 MI S JCT SR 74 · Structure no. 07218

Built
2010
15 years old
Condition
Good
inspected May 2022
Type
Culvert
Concrete Continuous
Length
42 ft
3 main spans
Daily traffic
79,523
2017 count
Owner
State
State Highway Agency

About this bridge

I-17 over Wash is a concrete continuous culvert carrying I-17 over Wash in Maricopa County, Arizona. It was built in 2010, so it is 15 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 79,523 vehicles a day, roughly 4% of them trucks, projected to reach 79,533 by 2037. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-17
CrossesWash
Location0.8 MI S JCT SR 74
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.7867, -112.133
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 inspectionMay 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
DeckNot applicable
Main spans3
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,523 (2017)
Projected traffic79,533 by 2037
Trucks4%
Lanes on structure13
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$2,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-17 over Wash built?

It was built in 2010, making it 15 years old in 2025.

What condition is I-17 over Wash 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 May 2022.

How much traffic does I-17 over Wash carry?

About 79,523 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is I-17 over Wash?

The structure is 42 ft (12.8 m) long with a longest span of 8 ft (2.4 m).

Who owns I-17 over Wash?

It is owned by the State Highway Agency.