Founded in 1956, Wiss, Janney, Elstner Associates is an employee-owned firm that provides earthquake engineering services for new and existing structures. The firm specializes in the investigation, analysis, testing and design of historic and contemporary buildings. It operates more than 15 office locations throughout the United States and serves customers worldwide. Wiss, Janney, Elstner Associates offers a range of roofing, waterproofing, and failure and disaster response solutions. In addition, the firm provides construction management, repair and litigation consulting solutions for commercial, educational, residential and industrial facilities. Its projects include Castlewood Canyon Bridge, North Capitol Ramp and Memorial Hermann Medical Plaza.