Girder Assembly Line
Project: Tappan Zee Bridge, Nyack/Tarrytown, NY
Client:Tappan Zee Constructors
Zieman Engineering designed this assembly line for preassembly and float-out of 134 girder units weighing up to 2,400 kips.
Assembly line consisted of foundations and rails, hydraulic girder lifting carts, winch pulling system, adjustable girder
support grillages, in-water trestles and adjustable barge support grillages.