Although not part of a rehabilitation, the Cortlandt Street station was first closed in 2005 for the construction of the Dey Street Passageway, the underpass and the construction of the East Bathtub that supports the eastern towers of the new World Trade Center complex that was being rebuilt. With the conclusion of the Dey Street Passageway construction, the uptown platform was opened first, in November 25, 2009. The southbound platform was rehabilitated and reopened on September 6, 2011 with a new underpass, to coincide with the upcoming opening of the National September 11 Memorial & Museum.