The Walsh Group is a construction company that provides general contracting, construction management, and design-build services. The company was founded in 1898 and is headquartered in Chicago, Illinois. Walsh Group has completed a variety of projects, including highways, bridges, airports, and water treatment plants. The company has a strong focus on safety and sustainability, and has received numerous awards for its work in these areas. Walsh Group is one of the largest construction companies in the United States, with operations in more than 20 states.