US Bridges

Toltec Buttes RD over Casa Grande Canal Ext

Fair

Pinal County, Arizona · 0.2 MI S JCT Selma HWY · Structure no. 08141

Built
1940
85 years old, rebuilt 1981
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
506
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Toltec Buttes RD over Casa Grande Canal Ext is a concrete continuous slab carrying Toltec Buttes RD over Casa Grande Canal Ext in Pinal County, Arizona. It was built in 1940 and reconstructed in 1981, so it is 85 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 5 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 506 vehicles a day, roughly 5% of them trucks, projected to reach 516 by 2040. The structure is 28 ft (8.5 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesToltec Buttes RD
CrossesCasa Grande Canal Ext
Location0.2 MI S JCT Selma HWY
RouteCity Street 0
CountyPinal County
StateArizona
Coordinates32.8476, -111.6367
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 loadHS 20
Structure length28 ft (8.5 m)
Longest span13 ft (4 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic506 (2020)
Projected traffic516 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Toltec Buttes RD over Casa Grande Canal Ext built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1981.

What condition is Toltec Buttes RD over Casa Grande Canal Ext 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 February 2024.

How much traffic does Toltec Buttes RD over Casa Grande Canal Ext carry?

About 506 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Toltec Buttes RD over Casa Grande Canal Ext?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4 m) and a deck 27 ft wide.

Who owns Toltec Buttes RD over Casa Grande Canal Ext?

It is owned by the City or Municipal Highway Agency.