Quartz Flat Campground is a well-maintained Forest Service campground located directly off I-90 with easy access via the Quartz Flat Rest Stop, offering 78 paved sites across three loops with amenities including flush and vault toilets, potable water, and a dump station ($10 fee for non-campers).

The campground sits above the Clark Fork River with a self-guided nature trail and some sites offering river views, making it convenient for paddlers and anglers accessing the Alberton Gorge and river launch sites just miles away.

At $15/night with a 14-foot height-restricted tunnel connecting both sides of the campground, it serves as an ideal overnight stop for I-90 travelers, though expect highway and occasional train noise.