Great Lakes Dredge & Dock Corp. provides dredging services. It operates through the following segments: Dredging and Environmental and Infrastructure. The Dredging segment engages in the enhancement or preservation of navigability of waterways or the protection of shorelines through the removal or replenishment of soil, sand or rock. The environmental and infrastructure segment provides construction services on soil, water and sediment for clients in both the public and private sectors. The company was founded by William A. Lydon and Frederick C. Drews in 1890 and is headquartered in Oak Brook, IL.