The Howland Hook Marine Terminal Port Redevelopment on Staten Island, NYC

The Howland Hook Marine Terminal (HHMT) is located along the Arthur Kill shipping channel on Staten Island in NYC. It is a vital port facility for the shipment of containerized cargo through the Port of New York to the East and Midwest markets. The existing terminal was built in the 1960's and was designed to accommodate vessels with drafts of 10.5 meters. The present redevelopment program involves the reconstruction of the existing wharf to accommodate 15-meter draft vessels, lengthening the wharf by 150 meters, and upland soil stabilization for increased container storage and a new inter-modal rail yard. Soil stabilization involved consolidating lime sludge lagoons and tidal marsh deposits, as well as the construction of a 25-hectare square meter reinforced soil sub-base (soil beam) over a former gypsum disposal area. The high bedrock and poor soil conditions on this project created significant geotechnical design challenges.