US Bridges

Lone Mountain RD over Wash

Good

Maricopa County, Arizona · 0.35 MI W/ Crozier RD · Structure no. 10053

Built
1996
29 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
66 ft
6 main spans
Daily traffic
2,186
2023 count
Owner
County
County Highway Agency

About this bridge

Lone Mountain RD over Wash is a concrete continuous culvert carrying Lone Mountain RD over Wash in Maricopa County, Arizona. It was built in 1996, so it is 29 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 2,186 vehicles a day, projected to reach 2,196 by 2042. The structure is 66 ft (20.1 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLone Mountain RD
CrossesWash
Location0.35 MI W/ Crozier RD
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.76769, -112.53983
Functional classRural Local

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 inspectionJanuary 2025
Inspection intervalevery 36 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.8 US tons
Inventory rating41.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span10 ft (3 m)
Deck width70 ft (21.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,186 (2023)
Projected traffic2,196 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Lone Mountain RD over Wash built?

It was built in 1996, making it 29 years old in 2025.

What condition is Lone Mountain 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 January 2025.

How much traffic does Lone Mountain RD over Wash carry?

About 2,186 vehicles per day (2023 count).

How long is Lone Mountain RD over Wash?

The structure is 66 ft (20.1 m) long with a longest span of 10 ft (3 m) and a deck 70 ft wide.

Who owns Lone Mountain RD over Wash?

It is owned by the County Highway Agency.