US Bridges

Lone Mountain Pkwy over Wash

Good

Maricopa County, Arizona · 1.0 MI E JCT Vistancia Bl · Structure no. 10964

Built
2004
21 years old
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
4,742
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lone Mountain Pkwy over Wash is a concrete continuous culvert carrying Lone Mountain Pkwy over Wash in Maricopa County, Arizona. It was built in 2004, so it is 21 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 4,742 vehicles a day, roughly 2% of them trucks, projected to reach 4,752 by 2037. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLone Mountain Pkwy
CrossesWash
Location1.0 MI E JCT Vistancia Bl
RouteCity Street 0
StateArizona
Coordinates33.758, -112.3243
Functional classUrban 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 inspectionApril 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 length34 ft (10.4 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 traffic4,742 (2017)
Projected traffic4,752 by 2037
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Pkwy over Wash built?

It was built in 2004, making it 21 years old in 2025.

What condition is Lone Mountain Pkwy 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 April 2022.

How much traffic does Lone Mountain Pkwy over Wash carry?

About 4,742 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Lone Mountain Pkwy over Wash?

The structure is 34 ft (10.4 m) long with a longest span of 12 ft (3.7 m).

Who owns Lone Mountain Pkwy over Wash?

It is owned by the City or Municipal Highway Agency.