American Civil Constructors is a Denver-based construction company with offices in California, Texas and Washington. ACC has completed projects throughout the United States and provides light and heavy civil construction and contracting services. The company is organized into heavy civil and light civil construction divisions. These are further divided into geographic regions. The heavy civil group performs seismic retrofits, drainage, underground construction, bridge rehabilitation and earthwork. The light civil group performs highway reclamation, landscape construction, design-build landscaping and sports field construction. ACC has completed projects for the Dallas Arboretum, Diablo Hills Reservoir and the University of Denver. American Civil Constructors maintains headquarters outside of Denver in Lakewood, Colo., and a branch location in Benicia, Calif.