US Bridges

River Road over Small Wash

Fair

Pima County, Arizona · 4 · Structure no. 11501

Built
2006
19 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
12,010
2022 count
Owner
County
County Highway Agency

About this bridge

River Road over Small Wash is a concrete continuous culvert carrying River Road over Small Wash in Pima County, Arizona. It was built in 2006, so it is 19 years old, younger 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 12,010 vehicles a day, roughly 1% of them trucks, projected to reach 12,020 by 2042. The structure is 23 ft (7 m) long and 139 ft wide.

CarriesRiver Road
CrossesSmall Wash
Location4
RouteCounty Highway 0
StateArizona
Coordinates32.28344, -110.92707
Functional classUrban Other Principal Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width139 ft (42.4 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,010 (2022)
Projected traffic12,020 by 2042
Trucks1%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was River Road over Small Wash built?

It was built in 2006, making it 19 years old in 2025.

What condition is River Road over Small 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 March 2024.

How much traffic does River Road over Small Wash carry?

About 12,010 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is River Road over Small Wash?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 139 ft wide.

Who owns River Road over Small Wash?

It is owned by the County Highway Agency.