Hwy. 20 Willits to Fort Bragg, Ca. ???

We travel that route at least three times a year in a 40' DP towing a Ford Edge. In the past we had a Ford F-250 towing a 36' TT. Yes, it is narrow and winding, but it is not that big a deal. There are rigs your size and larger (including logging trucks) that travel to the coast on Hwy 20 every day. I have also used Hwy 128, but prefer Hwy 20. Just take it slow and pull over to allow faster vehicles to pass and you will be fine.