Incorporated in 1987, Concrete Contractors Interstate is a commercial concrete construction and general engineering firm. The company s street improvement services include demolition and landscaping. It specializes in site work for concrete roadways, curbs and gutters. Additionally, the company offers traffic control, renovation and excavation services. It provides services for flatwork, grading and irrigation. The company operates a division of equipment and operators that provide services for site and subgrade preparation and grading. Concrete Contractors Interstate is located in Poway, Calif.