At this point, the byway and Upper Imnaha Road become contiguous and run along the river's left bank. Blackhorse Campground is on the left shortly thereafter, and Blackhorse Creek enters from the left.
Here, the byway and Upper Imnaha Road converge along the river's left bank. Shortly afterward, Blackhorse Campground appears on the left side, and Blackhorse Creek flows in from the left.