No worries about the Alaska Highway Mike, it is all paved. Sure there is construction during the summer, but the construction areas I saw were very well managed. Biggest obstacles there were RVs - they travel in herds and it is hard to pass. I think I passed 13 at once, but Phil beat me by passing 14 in a row. The only bad road we saw was the last 50 - 100 miles before the Alaska border where there are huge frost heaves. I saw Phil launch his butt off his seat a few times. I've seen many much worse construction zones in the continental US. The Cassiar Highway was much worse than the Alaska Highway but all paved.
I, too want to go back. I went too fast last time and missed a bunch of stuff I wish I would have stopped to see. DON'T GO TOO FAST. ENJOY.