New York District, U.S. Army Corps of Engineers; Port Authority of New York/New Jersey

In 1980, the Corps of Engineers embarked on a phased program to deepen the entrance channels to the Port of New York/New Jersey from 35 to 40 ft, then to 45 ft, and eventually to 50 ft. In the execution of this work, Great Lakes has performed many key projects, becoming the dominant contractor in this sector of the market. The projects require the excavation of a full range of materials that includes soft and stiff clays, red shale, serpentine rock, glacial till, and granite.