Critical thinking is important.  The interstates connected large populations to each other.  Same with the bridges.  The commerce existed before the infrastructure was built.  There is no conceivable economic activity that will occur between Juneau and 50 miles from Skagway that will make a $574 million payback plus the maintenance costs.  Up here we keep the "build it and they will come" myth going.  Rail?  I think the last time the AKRR was profitable was WWII.