I took the 31A from Kaslo to New Denver last August. No gravel that I saw. Just very twisty and back country. All pavement 100%. Put Retallack BC (half way point) into Google Maps and look at street view. Beautiful pavement.I was originally going to take Highway 31 north of Kaslo until drrod pointed out its gravel... I swear the number of great looking gravel and forest service roads I've seen in BC has made me seriously consider getting a dual sport to sit next to my ST!
Just booked the Chi-Cheemaun ferry here in Ontario to go to Northern Ontario and head west. Leaving June 18.