It's possible, but it's not allowed.
There are no sidewalks from AKL to AK, although there is a road which, for the most part, is pretty busy... mostly with the nice cool air conditioned busses that can get you to AK in under a few minutes (and you'll get a seat... we ALWAYS had a seat to AK on the busses from AKL... even Fourth of July week).
Go with the busses.