With annual revenues of more than $1 billion, Walsh Construction is one of the largest contracting firms in Chicago. The company specializes in general contracting and construction management services. Operational since 1898, it offers a range of design and build services. The company has invested over $450 million in capital equipment. Walsh Construction employs a staff of nearly 4,000 individuals. It is a subsidiary of The Walsh Group, which is one of the largest general contracting companies in the United States. The Walsh Group is a family-owned business that has been in operation for approximately 100 years. The group also operates Archer Western Contractors, which was founded in 1983.