US Bridges

I 17; NB over Wash

Good

Yavapai County, Arizona · 7.3 MI S JCT SR 179 · Structure no. 05756

Built
1957
68 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
8,714
2022 count
Owner
State
State Highway Agency

About this bridge

I 17; NB over Wash is a concrete continuous culvert carrying I 17; NB over Wash in Yavapai County, Arizona. It was built in 1957, so it is 68 years old, older 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 8,714 vehicles a day, roughly 24% of them trucks, projected to reach 8,724 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 17; NB
CrossesWash
Location7.3 MI S JCT SR 179
RouteInterstate 17
CountyYavapai County
StateArizona
Coordinates34.6252, -111.8382
Functional classRural 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 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 rating75 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic8,714 (2022)
Projected traffic8,724 by 2042
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I 17; NB over Wash built?

It was built in 1957, making it 68 years old in 2025.

What condition is I 17; NB 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 September 2022.

How much traffic does I 17; NB over Wash carry?

About 8,714 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is I 17; NB over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns I 17; NB over Wash?

It is owned by the State Highway Agency.