If we continue to lose the Amazon forests, none of our progeny will be "transpiring".  
It was late...low light conditions..I`m not as young as I used to be.
  A railroad is just a pipeline on tracks, if it comes down to it, speaking to it`s utilitarian abilities. "A pipeline" that runs in BOTH directions at will.  
If we don`t connect a spur we have 75% completed, we certainly won`t avail ourselves of it 100%, no matter what looms or comes up that will justify it.
 If a sudden project good for the state as a whole begins to take off, that needs massive cantonment and staging as we`ve seen in the past with oil construction and mining. There could be numerous smaller ventures that would keep a steady use NOW of the staging areas over there for short or long term.   This railroad spur is important north-facing infrastructure and the state should finish it..and let it become an available tool in the development of this vast sparse young, strategically important, and growing state.