As a subcontractor to Tappan Zee Constructors, Weeks Marine performed mechanically
dredge, using an environmental bucket, to create a construction access channel for the
Tappan Zee Bridge Replacement project located on the Hudson River in New York.
Weeks was responsible for dredging, dewatering, transporting, in barge processing,
mechanically offloading material for upland disposal, and capping of the dredged area with
armor stone. The dredging was divided into 2 phases; Phase 1 consisted of 800,000 CY and
Phase II 150,000 CY.
Phase I was the largest dredge material processing and upland placement project performed
in the shortest timeframe ever performed in the New York Harbor. Weeks successfully
completed Phase I on time.
The capping consisted of placing approximately 270,000 CY of armoring material. Capping
was performed using a barge mounted conveyor in conjunction with a Material Handler that
loaded the conveyor. The capping was installed in two armor layers, one layer consisting of
sand and the second layer consisting of ¾” stone.