Near the very start there are a couple of moderately rocky uphill sections that will stop sedans but AWD SUV should be ok to Ozzard trailhead & beyond to the MTB trails. No problem in a truck. I did not continue past KM6 but road gets narrow & grown in after this point. Mercantile Creek is watershed area for Ucluelet so I was expecting to find gates (especially since no Strava heatmap traces beyonfd the MTB area) but encountered none.