Giant Cranes Give the Bayonne a Much-Needed Lift |: "Known as segment-launching gantries, or gantry cranes, these mechanical giants haul and install the 70-ton concrete segments that make up the roadways. As big as they are – 500 feet long and 1 million pounds each – they work with finesse and precision, moving the roadway segments into just the right place for human workers to bind them with steel, epoxy and more concrete."
