During modern planning, it was considered to utilize the cross-platform provision, known as the "Shallow Chrystie Option", or to place the tracks under Forsyth Street one block east (the Forsyth Option), both of which could tie into an existing tunnel near the Chatham Square station site south of Canal Street. This tunnel, known as the Confucius Plaza Tunnel, was built in the 1970s along with several sections in Upper Manhattan used for Phases 1 and 2 of the SAS. Both these options would require extensive usage of cut-and-cover construction methods, creating large amounts of disturbances to the local community, environmental issues, and possibly requiring the demolition of existing structures.