No workers were hurt, but several concrete silos at the new Tappan Zee Bridge have failed and one collapsed, prompting a shutdown of the floating concrete plants, according to Tappan Zee Constructors, LLC, which is building the new span.

Two floating concrete plants are creating hundreds of thousands of cubic yards of the materials for the structure, and how long they will be offline has not yet been disclosed.

"Tappan Zee Constructors, LLC (TZC) today shut down operations of both floating concrete batch plants due to a failure of one of the silo structures which caused the other two silo structures on one of the batch plants to collapse," TZC said in a statement. "All workers are safe and all other construction work will continue on the project. Representatives from the New York Department of Environmental Conservation and engineers from TZC and the New York State Thruway Authority are on the scene assessing the situation. Safety and environmental stewardship are our top priorities as we continue to investigate this incident."