The scheduled weekend work will expedite the safe removal of portions of the structure of the bridge and for the lifting of large steel and concrete sections onto the bridge, a spokesman said.
The Port Authority urges motorists to use the Goethals Bridge as an alternative.
The bridge will also be closed to traffic the weekends of Aug. 8-10 and 15-17 from 11:59 p.m. on Fridays to 4 p.m. on Sundays.
To receive the latest updates, travelers should register for bridge and tunnel alerts at http://paalerts.com/, call 511, or visit www.511NY.org or www.511NJ.org.
The $1.3 billion bridge project is designed to raise the navigational clearance under the crossing to 215 feet to allow larger, modern ships to travel under it.