IT CREATES JOB FOR PRIVATE CONTRACTORS!  It is the conservative way. In a few years you pay the same contractors to remove the rail line that is not being used enough.  Consider where the rail line will start, Huston, and end. The only potential user of any consequence is the coal miners. Meanwhile they will build a gas line so they don't need rail.   

AARC another Alaska good-old-boy operation where you take a profitable idea and improve it uni til  it goes bankrupt.