They are going to replace ALL of the ties and track with this shutdown....one can see the track already ripped out towards Frontierland from the Mainstreet station....and big piles of composite ties can be seen when riding BTMRR. They will not suggest an opening date for railroad....its a huge project! And it is highly likely that Walter E will come back to the Magic Kingdom before the tracks are finished and operational.... The railroad was much missed during our recent trip and crowds were high, the traffic the train helps handle in navigating was noticeable....and with one pathway around the castle closed due to a crane parked there all week made things even more congested around the kingdom.Yes some of the track has been removed. but they may have done that just to provide a way to move construction equipment into the race track area.