US Bridges

Ajo Way over Small Wash

Good

Pima County, Arizona · 500 W of Alvernon Way · Structure no. 08728

Built
1984
41 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
49 ft
4 main spans
Daily traffic
15,720
2023 count
Owner
County
County Highway Agency

About this bridge

Ajo Way over Small Wash is a concrete continuous culvert carrying Ajo Way over Small Wash in Pima County, Arizona. It was built in 1984, so it is 41 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 15,720 vehicles a day, roughly 5% of them trucks, projected to reach 15,730 by 2042. The structure is 49 ft (14.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAjo Way
CrossesSmall Wash
Location500 W of Alvernon Way
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.1761, -110.9124
Functional classUrban Other Principal 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 inspectionJanuary 2024
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 spans4
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,720 (2023)
Projected traffic15,730 by 2042
Trucks5%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ajo Way over Small Wash built?

It was built in 1984, making it 41 years old in 2025.

What condition is Ajo Way 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 January 2024.

How much traffic does Ajo Way over Small Wash carry?

About 15,720 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Ajo Way over Small Wash?

The structure is 49 ft (14.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Ajo Way over Small Wash?

It is owned by the County Highway Agency.