Northern Illinois Service Company is a full-service demolition contracting firm with more than 40 years of experience. Based in Rockford, Ill., the company provides a range of services in categories, such as demolition, earthwork, underground construction, commercial and industrial site work and design-build services. The firm serves a variety of customers, including general contractors, civil engineers, municipalities, developers and utility owners. It also offers recycling and disposal services for concrete, asphalt and other types of clean construction and demolition debris. Additionally, Northern Illinois Service Company operates four limestone Quarries that supplies IDOT approved aggregates to customers across northern Illinois and southern Wisconsin.