Just got back and for the most part, the roads were no different from the lower 48.
Only bad section was Destruction Bay to Tok but that was frost heaves not expansion joints.
Expansion joints are typical with Portland Cement Concrete (PCC...aka:the gray stuff). Asphalt Concrete (the black stuff) doesn't typically have them unless they used it to cap PCC which is generally considered a poor maintenance option in the last 20-25yrs, so it's becoming more and more rare. We didn't see much PCC along the route so not really an issue
Frost heaves tend to vary from year to year. Learn to watch for the cones/flags/skid marks and it's pretty easy to pick them up. Slow down ahead of time and they are typically a non-event.
