Bolton & Menk is a full-service engineering consultation firm that was founded in 1949. The firm offers civil and transportation engineering and land surveying services. It provides municipal engineering, cultural resource management and aviation solutions. Bolton & Menk works with a team of more than 285 staff members. The firm provides services to over 225 communities and agencies in Minnesota and Iowa. It also offers land development and environmental services for public customers in the Upper Midwest and private clients throughout the world. Bolton & Menk maintains offices in Mankato, Fairmont, Sleepy Eye, Burnsville, Willmar, Ramsey and Chaska in Minnesota and Ames in Iowa. The firm has undertaken projects for the Lake Washington Sanitary District and the Minnesota River Valley Public Utilities Commission.