El Camino Viejo over Sand Tanks Wash

Fair

Pinal County, Arizona · 1.2 MI N JCT US 60 · Structure no. 08439

Built: 1900; 125 years old
Condition: Fair; inspected January 2024
Type: Slab; Concrete Continuous
Length: 44 ft; 2 main spans
Daily traffic: 132; 2022 count
Owner: County; County Highway Agency

About this bridge

El Camino Viejo over Sand Tanks Wash is a concrete continuous slab carrying El Camino Viejo over Sand Tanks Wash in Pinal County, Arizona. It was built in 1900, so it is 125 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 132 vehicles a day, roughly 1% of them trucks, projected to reach 142 by 2042. The structure is 44 ft (13.4 m) long and 23 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesEl Camino Viejo

CrossesSand Tanks Wash

Location1.2 MI N JCT US 60

RouteCounty Highway 0

CountyPinal County

StateArizona

Coordinates33.3014, -111.3675

Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionJanuary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourScour critical; foundations unstable for calculated scour conditions

Structural evaluation6: Equal to present minimum criteria

Deck geometry4: Meets minimum tolerable limits to be left in place as is

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating40 US tons

Inventory rating24 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadUnknown

Structure length44 ft (13.4 m)

Longest span20 ft (6.1 m)

Deck width23 ft (6.9 m)

Roadway width20 ft (6.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic132 (2022)

Projected traffic142 by 2042

Trucks1%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed9.9 mi (16 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$1,000 (2023 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was El Camino Viejo over Sand Tanks Wash built?

It was built in 1900, making it 125 years old in 2025.

What condition is El Camino Viejo over Sand Tanks 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 January 2024.

How much traffic does El Camino Viejo over Sand Tanks Wash carry?

About 132 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is El Camino Viejo over Sand Tanks Wash?

The structure is 44 ft (13.4 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns El Camino Viejo over Sand Tanks Wash?

It is owned by the County Highway Agency.