It is strange in how much this looks like a similar route for I-95 that would have bypassed Bangor when it was first designed. (though not near or into Piscataquis county from tales of the old-timers)
The line shown is not 100% as no route is currently publicly known. It is an an averaged possible based on the few known tidbits of info.
Segments of this ROW if obtained may come into play for a future Energy Corridor with a potential for a transportation corridor. --- (the bigger, longer term picture when it becomes to late ? )