Lizzie thank you that is good info
I drove the Alcan both ways this week as a rule we prefer the Cassiar Hwy #37 for at least one direction but I was pressed for time and had heard there were construction holdups at Bell Two bridge of indeterminate length of time.
I don't like the gang-up when traffic is released you lose the sense that you are "alone in the wilderness" for the next several hours. Best plan then is to pull over and make a coffee, take a break.
rkassl sorry I don't have more useful info but I suggest you plan on it for sure you won't be disappointed the highway gets better as you move south.
Good luck.