The International Information Center for Structural Engineers

Items filtered by date: Wednesday, 23 July 2014

Workers began drilling piles for the Tappan Zee Bridge in March. Since then, equipment has slowly accumulated on the Hudson River in New York to help build the bridge. Perhaps the most impressive piece of equipment arrived last week though when a barge-mounted concrete production factory arrived on site. The barge is one of a pair that will make 300,000 cubic yards of concrete for the new bridge span. The two barges are expected to reduce costs throughout the length of the project and also will likely make the project run smoother as the concrete will not need to be transported to the site. Workers will not have to worry about the concrete getting delayed due to traffic or road hazards. Had the decision been made to make the bridge’s concrete at a regular production factory, the Tappan Zee bridge project would have added 30,000 trucks to the road to transport the concrete throughout the duration of the project. The 60 foot by 200 foot barge is capable of producing 125 cubic yards of concrete per hour and can test the concrete in a laboratory located on the barge.