a shuttle running from Times Square to South Ferry. The new "H" system was implemented on August 1, 1918, joining the two halves of the Broadway–Seventh Avenue Line and sending all West Side trains south from Times Square. An immediate result of the switch was the need to transfer using the 42nd Street Shuttle in order to retrace the original layout. The completion of the "H" system doubled the capacity of the IRT system. Later years The city government took over the IRT's operations on June 12, 1940. On August 9, 1964, the New York City Transit Authority (NYCTA) announced the letting of a $7.6 million contract to lengthen platforms at stations from Rector Street to 34th Street–Penn Station on the line, and stations from Central Park North–110th Street to 145th Street on the Lenox Avenue Line to allow express trains to be lengthened from nine-car trains to ten-car trains, and to lengthen locals from eight-car trains to ten-car trains. With the completion of this project, the NYCTA project to lengthen IRT stations to accommodate ten-car trains would be complete. After the September 11, 2001 attacks, the subway tunnels around Cortlandt Street collapsed, and the line was closed temporarily. About of tunnels and trackage, including of totally destroyed tunnels and tracks in the vicinity of the World Trade Center site, were entirely rebuilt. The station reopened on September 15, 2002. During the intervening period, the station was renovated. Due to water damage to South Ferry caused by Hurricane Sandy, all 1 trains terminated at this station from October 2012 until April 4, 2013, when the former South Ferry Loop terminal station reopened. Station layout This underground station has two tracks and two side platforms. The 1 train stops here at all times. Each platform has mosaic trim line and name tablets of mostly green and brown. The tiles are painted light green below the "R" tablets. Exits This station has five fare control areas at three locations. There is no crossover between the uptown and downtown sides. On the northern end of the downtown platform, there are two High Entry/Exit Turnstiles leading to one street stair that goes up to the northwest corner of Rector and Greenwich Streets coming from two high entrance turnstiles directly on the platform. On the northern end of the uptown platform, a single staircase leads to the tiny, full-time mezzanine. It has a turnstile bank,