Idaho Concrete Prices, Codes & Climate

Ready-mix cost range

$135–$175per cubic yard

Frost depth reference

31″reference only

ACI 318 exposure classes

F3 · C2 · S1

Air entrainment

required for exterior flatwork

How much does concrete cost in Idaho?

Ready-mix in Idaho runs roughly $135 to $175 per cubic yard. That is an estimated band, not a quote — published US price sources disagree with each other by nearly two to one. How we source price figures.

What does the Idaho climate require?

Cold continental winters across the Snake River Plain and the mountains require ACI 306 protection from November into March, and highway deicers make F3-grade air-entrained mixes the safe default.

Under ACI 318, Idaho falls in exposure classes F3, C2, S1. Air entrainment is required for exterior flatwork. Air entrainment is required for classes F1, F2 and F3.

How deep is the frost line in Idaho?

Compiled reference tables put Idaho at about 31 inches. That figure is orientation only. The footing depth you actually have to build to is determined by your local building department — IRC R403.1.4 requires footings to extend below the locally determined frost line, and there is no national number.

Soil concerns

Basalt and caliche-bearing alkaline soils underlie the Snake River Plain, while wind-deposited loess in the Palouse is erodible and can collapse when saturated under footings.

Seismic

Central Idaho is genuinely active — the 1983 Borah Peak M6.9 and the 2020 Stanley M6.5 events — while the Boise valley carries moderate design demand.

Contractor licensing

We do not publish a licensing determination for Idaho without a dated primary source. We do not publish a state licensing determination without a dated primary source. Check the state board directly. Check the official source.

Cities

• Boise
• Meridian
• Nampa
• Idaho Falls
• Pocatello
• Caldwell
• Coeur Dalene