 The opening occurred in time to accommodate new service patterns due to a long-term weekend closure of the Clark Street Tunnel, which diverted weekend 2 trains to South Ferry for one year.Whitehall Street–South Ferry on the BMT Broadway Line has three tracks and two island platforms.The outer tracks continue south into the Montague Street Tunnel to the BMT Fourth Avenue Line in Brooklyn, and are used by late-night N trains and daytime R trains.