Airport/Transit Best Project: Number 7 Subway Line Extention Alisa Zevin October 6, 2016 One Comment The $2.4-billion No. 7 Subway Line Extension Project is a 1.5-mile, two-track underground rail system that extends west and then south from the subway line’s former end point at Times Square to new lay-up tracks at 11th Avenue and 25th Street.Read More