Tappan Zee Constructors, LLC, will continue conducting preconstruction geotechnical surveys to determine soil conditions in and near the Hudson River April  through 7.

On March 25 several barge-based operations began work conducting additional engineering analyses of the river bottom, following up on the “smart early work” that was completed in 2012. Tappan Zee Constructors, LLC, is conducting these tests to help ensure the designers utilize properly-sized piers and supporting foundations for the new bridge.

The testing operations are being conducted by small drilling rigs starting near the tower locations and working their way across the river. Noise levels from the equipment will be at a minimum. The river-based operations will run continuously 24 hours a day Monday through Friday and possibly Saturday.

This geotechnical work is scheduled to take approximately eight weeks to complete.  


There will be limited boring operations conducted on land under the existing bridge and just to the north at the proposed bridge locations.  These operations are being conducted on Thruway property and will not affect traffic in any way. The work is scheduled to be conducted between the hours of 7 a.m. and 5 p.m. Monday – Friday.


There are no boring operations on land scheduled for the Rockland area for the week of April 1.