Union Asphalt’s San Luis Obispo Plant has been servicing the San Luis area since 1962. Servicing the Cities of San Luis Obispo, Los Osos, Morro Bay, Cayucos, and Cambria, Unions plant location services a large geographic area.

Projects serviced in the past include The Performing Arts Center at both Cal Poly State University and Cuesta College, parking structures for the City of San Luis Obispo and Cal Poly, and Highway 101 Cuesta Grade (#05-345414) for The California Department of Transportation.