 The fourth phase of construction will bring the Second Avenue line through Chinatown at an undetermined date . However , the tunnel under the Confucius Apartments is not planned to be used ; while original plans involved the Second Avenue line running at the same depth of the Sixth Avenue Line at the Grand Street station , that option would require the utilization of cut @-@ and @-@ cover construction methods , which would disrupt the community and require the demolition of several nearby structures . Instead the MTA has proposed a deeper tunnel alignment in this area , including a new lower level at Grand Street , to reduce construction impacts on the Chinatown community . As a result , trains will be unable to use this tunnel segment ; however , the MTA suggests that the tunnel segment could be used to store ancillary facilities for the subway line , such as a power substation or a ventilation facility . 
