Interstate Concrete & Asphalt Company was established in 1986 in Coeur d'Alene, Idaho. Interstate has facilities throughout Northern Idaho and Eastern/Central Washington, as well as Hermiston and Boardman, Oregon. The company offers ready-mixed concrete, aggregates, crushed rock & gravel, sand, asphalt, paving, grading, excavation and road construction. Safety, quality, and customer service are company goals every day.