For those of you who are interested in the hike on Monday, September 3rd, below are the direction to the trailhead:
From Superior, take River Street to the south side of I-90 and turn left (east) on Diamond Match Rd. Drive for 1.1 miles and turn right on Cedar Creek Road. This road is paved for the first 2.7 miles and then becomes a good gravel road. At mile 5.7, turn right on Oregon Gulch Rd #7865. A high-clearance vehicle is recommended but not required. Drive for 8.1 miles to the trailhead just before the gate at the end of the road. (From Hiking: Waterfalls in Montana)
https://www.trails.com/us/mt/superior/lost-lake-trail