The Wall Street Journal reports that the work will likely begin in August. It's expected to last 12 to 14 months.
The closure will affect the R train, which carries tens of thousands of riders between Manhattan and southern Brooklyn.
Salt from storm surges heavily damaged electronic components in the subway tunnels and is still causing corrosion.
The Metropolitan Transportation Authority also plans to close a tunnel used by the G train between Brooklyn and Queens for 12 weekends this year.
Information from: The Wall Street Journal, http://www.wsj.com
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.