US Bridges

I-17 Frontage RD over Wash

Good

Maricopa County, Arizona · 0.9 MI S/ New River · Structure no. 08640

Built
1969
56 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,871
2020 count
Owner
County
County Highway Agency

About this bridge

I-17 Frontage RD over Wash is a concrete continuous culvert carrying I-17 Frontage RD over Wash in Maricopa County, Arizona. It was built in 1969, so it is 56 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 1,871 vehicles a day, roughly 10% of them trucks, projected to reach 1,881 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-17 Frontage RD
CrossesWash
Location0.9 MI S/ New River
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.90174, -112.14588
Functional classRural Major Collector

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 inspectionDecember 2022
Inspection intervalevery 36 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.1 US tons
Inventory rating37 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,871 (2020)
Projected traffic1,881 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Frontage RD over Wash built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-17 Frontage RD 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 December 2022.

How much traffic does I-17 Frontage RD over Wash carry?

About 1,871 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is I-17 Frontage RD over Wash?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns I-17 Frontage RD over Wash?

It is owned by the County Highway Agency.