Washington Concrete Prices, Codes & Climate

Ready-mix cost range

$155–$195per cubic yard

Frost depth reference

24″reference only

ACI 318 exposure classes

F2 · C2 · S1

Air entrainment

required for exterior flatwork

How much does concrete cost in Washington?

Ready-mix in Washington runs roughly $155 to $195 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 Washington climate require?

Persistent rain and cool temperatures west of the Cascades slow set times and complicate finishing, while Eastern Washington has a true continental winter with hard freeze-thaw cycling.

Under ACI 318, Washington falls in exposure classes F2, 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 Washington?

Compiled reference tables put Washington at about 24 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

Glacial till and soft organic deposits ring Puget Sound with liquefiable fill in Seattle's industrial flats, and the Columbia Basin has alkaline, sulfate-bearing soils.

Seismic

The Cascadia Subduction Zone plus the shallow Seattle Fault place the Puget Sound region in high seismic design categories with strict anchorage and reinforcement requirements.

Contractor licensing

We do not publish a licensing determination for Washington without a dated primary source. We do not publish a state licensing determination without a dated primary source.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

• Seattle
• Spokane
• Tacoma
• Vancouver
• Bellevue
• Everett
• Kent