GraefUSA Inc is a multidisciplinary engineering firm that provides a wide range of services to clients in the public and private sectors. The company was founded in 1961 and has since grown to become one of the largest engineering firms in the Midwest. GraefUSA's services include civil engineering, structural engineering, environmental engineering, transportation engineering, and more. The company is committed to providing high-quality, innovative solutions to its clients, and to improving the communities it serves.