Since the 1970s, Kiewit Southern Company has been building projects throughout the Southeastern United States, from North Carolina to Florida and west into Alabama. Kiewit Southern has played a major role in the building of the infrastructure that has helped the Southeast develop into one of the fastest growing regions in the United States. The company s projects include construction of highways, airports, mass transit systems, canals, dams, pump stations and tunnels. It also specializes in grading, paving, excavation and structures. Kiewit Southern Company is headquartered in Peachtree City, Ga., and the company has area offices in Sunrise and Lakeland, Fla.