In addition to work on the four linked Fulton Street stations, the Dey Street Passageway, located outside the subway system's paid area, was built under Dey Street. It connected the Fulton Street station complex to the Cortlandt–Church Streets station, serving the . A new entrance building was constructed on the southwest corner of Broadway and Dey Street, providing direct access to the Dey Street passageway. It opened alongside the rest of the Fulton Center in November 2014, and an extension to the World Trade Center Transportation Hub opened in May 2016. There were plans for a free transfer between the Cortlandt–Church Street station and the at the World Trade Center station; however, this plan was removed due to cost overruns. , the connection was again slated to be built and the passageway opened with newly-rearranged turnstiles. The connection opened on December 29, 2017, after a reconfiguration of the respective stations' fare areas. A separate transfer to the at WTC Cortlandt, outside the fare controls of either the Cortlandt–Church/World Trade Center or Fulton Street stations, was opened on September 8, 2018.