US Bridges

Palo Verde Road over Small Wash

Good

Pima County, Arizona · 500 N of 44th · Structure no. 10504

Built
2011
14 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
25 ft
1 main span
Daily traffic
18,010
2022 count
Owner
County
County Highway Agency

About this bridge

Palo Verde Road over Small Wash is a concrete continuous culvert carrying Palo Verde Road over Small Wash in Pima County, Arizona. It was built in 2011, so it is 14 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 18,010 vehicles a day, roughly 5% of them trucks, projected to reach 18,020 by 2042. The structure is 25 ft (7.6 m) long and 106 ft wide.

Location

Open in Google Maps
CarriesPalo Verde Road
CrossesSmall Wash
Location500 N of 44th
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.18634, -110.91778
Functional classUrban Minor Arterial

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 inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width106 ft (32.3 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,010 (2022)
Projected traffic18,020 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Palo Verde Road over Small Wash built?

It was built in 2011, making it 14 years old in 2025.

What condition is Palo Verde Road over Small 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 March 2024.

How much traffic does Palo Verde Road over Small Wash carry?

About 18,010 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Palo Verde Road over Small Wash?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 106 ft wide.

Who owns Palo Verde Road over Small Wash?

It is owned by the County Highway Agency.