The new line will serve 200,000 riders per day when it opens in 2017. Total project cost is $4.5 billion. An interesting note regarding the tunnel boring machine itself:
The tunnel boring machine was originally manufactured by The Robbins Company about 30 years ago. It was first used to dig the MTA’s 63rd Street Tunnel in the late 1970’s and has been used on at least four other projects. The machine has been reconditioned and was rebuilt in Newark, NJ. The TBM was most recently used on the Fall River CSO Project in Fall River, MA.