 The modern construction plan for the Second Avenue Subway , developed in 2004 , would make use of most of these tunnel segments . The first phase of service , which will reroute Q train service from the 60th Street Line ( to Queens ) to the BMT 63rd Street Line ( and north to 96th Street ) , would use the tunnel segment between 99th and 105th Streets for storage of up to four trainsets . By mid @-@ 2013 , work had resumed in this tunnel segment , involving the addition of track and signals , mechanical and plumbing equipment , and upgrading the tunnels to meet modern fire code standards . Phase 2 , which does not have a set timetable for construction , is planned to extend Q train service from 96th Street to 125th Street . During Phase 2 , both East Harlem segments will be connected , modified , and used for normal train service . In 2007 , the MTA reported that the segments were in pristine condition . 
