Grist Creek Aggregates specializes in delivering rock products and ready-mixed concrete to Northern Mendocino and Southern Humboldt counties.

We're located just two miles east of Highway 101, in between Willits, CA and Laytonville, CA on Covelo Road/HWY 162 in Northern California.

Grist Creek Aggregates LCC
37342 Covelo Road
Willits, CA 95490

GCA Redi-Mix Concrete
76081 HWY 162
Covelo, CA 95428

Phone/Fax: 707-984-6626
Plant Manager: Duane Lee

Open: Monday to Friday 7AM-5PM

Locally owned and operated, Grist Creek Aggregates delivers and provides Redi-Mix concrete, high quality aggregate, sand, gravel, rock, and cobbles to customers in Northern Mendocino and Southern Humboldt Counties in Northern California.

GCA serves the communities of Covelo, Willits, Laytonville, and Ukiah with locally sourced, high quality aggregate from the North Fork of the Eel River.