Answer for Kodiakfrank
Technically the road is a private road that's open to the public. They can't stop you driving it, but if you were in anything other than an SUV or a pick up you can bet they'd stop and ask questions. One place you wouldn't be allowed is onto any of the mines - very tight security there. If you weren't prepared to do any winter camping, you might be in for a bit of a hard time, but I have one idea....PM on the way.
Ride Report: Canada North to South 2008 here
Drive Report: Ice Road Trucking 2005-2011 here