US Bridges

I 10; Frontage RD over Wash

Fair

Maricopa County, Arizona · 17.2 MI West of JCT SR 85 · Structure no. 06451

Built
1970
55 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
483
2016 count
Owner
State
State Highway Agency

About this bridge

I 10; Frontage RD over Wash is a concrete continuous culvert carrying I 10; Frontage RD over Wash in Maricopa County, Arizona. It was built in 1970, so it is 55 years old, older 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 483 vehicles a day, roughly 5% of them trucks, projected to reach 493 by 2036. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI 10; Frontage RD
CrossesWash
Location17.2 MI West of JCT SR 85
RouteState Highway 10
CountyMaricopa County
StateArizona
Coordinates33.49528, -112.92496
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic483 (2016)
Projected traffic493 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 10; Frontage RD over Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is I 10; Frontage RD over Wash 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 June 2021.

How much traffic does I 10; Frontage RD over Wash carry?

About 483 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is I 10; Frontage RD over Wash?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns I 10; Frontage RD over Wash?

It is owned by the State Highway Agency.