The majority of work at Joseph B. Callaghan, Inc hinges on the investigation, repair and restoration of buildings and other structures. As consulting engineers, the firm aids clients in the maintenance of property investment and the protection of life safety. Joseph B. Callaghan, Inc is a leader in structural rehabilitation. The firm's portfolio of work includes the comprehensive restoration of Franklin Field Stadium (constructed between 1922 and 1925), the oldest two-tiered stadium in the nation. Among 450 ventures completed by Joseph B. Callaghan, Inc at the University of Pennsylvania, this project drew on our full range of engineering services, beginning with the identification of structural deterioration and following with the execution of a multi-phased correction. The firm's rehabilitation of this architectural and historic landmark has been recognized nationally for engineering excellence.