US Bridges

Palo Verde Road over Medium Wash Rcb

Fair

Pima County, Arizona · 0.5 MI S of Ajo Way · Structure no. 09245

Built
1956
69 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
50 ft
4 main spans
Daily traffic
25,634
2022 count
Owner
County
County Highway Agency

About this bridge

Palo Verde Road over Medium Wash Rcb is a concrete continuous culvert carrying Palo Verde Road over Medium Wash Rcb in Pima County, Arizona. It was built in 1956, so it is 69 years old, older 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 25,634 vehicles a day, roughly 2% of them trucks, projected to reach 25,644 by 2042. The structure is 50 ft (15.2 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPalo Verde Road
CrossesMedium Wash Rcb
Location0.5 MI S of Ajo Way
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.17211, -110.91758
Functional classUrban Minor 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span10 ft (3 m)
Deck width72 ft (21.9 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,634 (2022)
Projected traffic25,644 by 2042
Trucks2%
Lanes on structure4
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 Palo Verde Road over Medium Wash Rcb built?

It was built in 1956, making it 69 years old in 2025.

What condition is Palo Verde Road over Medium Wash Rcb 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 Palo Verde Road over Medium Wash Rcb carry?

About 25,634 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Palo Verde Road over Medium Wash Rcb?

The structure is 50 ft (15.2 m) long with a longest span of 10 ft (3 m) and a deck 72 ft wide.

Who owns Palo Verde Road over Medium Wash Rcb?

It is owned by the County Highway Agency.