Home › Arizona › Pinal County › SR 79 over Casa Grande Canal

SR 79 over Casa Grande Canal

Pinal County, Arizona · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

SR 79 over Casa Grande Canal in Pinal County, Arizona, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1961, making it 64 years old at the 2025 inventory.
It carries about 3,137 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 256 of the 717 inventoried bridges in Pinal County rated fair (35.7%); 7 (1.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 59 ft
Location	0.6 mi S Jct SR 287
NBI structure number	00644
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.

Bridge	Built	Vehicles/day	Condition
SR 79 over Wash	1952	179,518	Fair
US 60 over Ironwood Drive	1990	77,864	Fair
US 60 over Wash	1990	75,394	Fair
Irr I 10; EB & WB over Wash	1967	60,638	Good
Irr I 10; EB & WB over Wash	1967	60,638	Good
Irr I 10 over Wash	1967	60,638	Good