The McMahon Group consists of more than 150 professional architects, engineers, surveyors and support staff. A.E. McMahon founded the company in 1909 as McMahon Associates and began providing civil engineering services to its clients. Its workforce has a diverse range of practice across the design and construction disciplines. McMahon s project portfolio includes manufacturing and industrial facilities as well as commercial, education, institutional, recreational, civic, public works and wastewater treatment plants. McMahon received the 2005 Best Civil Engineering Firm To Work For award. The firm has made the list of CE News' Top 50 Best Civil Engineering Firms To Work For in the Nation. The McMahon Group operates from its 38,000-square-foot headquarters in Neenah, Wis., as well as from branch offices in Valparaiso, Ind. and Machesney Park, Ill.