Builders say three silos have failed or collapsed on a floating concrete plant at the site of the new Tappan Zee Bridge.
A spokeswoman for Tappan Zee Constructors, Carla Julian, says in an email that there were no injuries in the accident Tuesday on the Hudson River.
Concrete is made at the construction site to save the time and cost of trucking. The silos hold raw materials such as crushed stone.
Julian said one of the silos failed, which caused two others to collapse. The email message did not provide details of the incident and Julian did not immediately return calls.
She said the state Thruway Authority and Department of Environmental Conservation were investigating.
The new bridge is a $3.9 billion project in the New York City suburbs.