M10 Road Impassable Due to Mudslides

M10 Road Impassable Due to Mudslides. The M10 road has an active construction zone to repair a major slide, located above Fouts Springs near Dixie Glade. Depending on construction progress, there can be periods where the road is impassable, has traffic control stops, or is passable in high clearance vehicles. Main impacts to access are to the Letts Lake basin on Grindstone Ranger District and to trailheads into Snow Mountain Wilderness. A 4WD high clearance vehicle is recommended (No Trailers) due to the narrow unstable area of the slide. The road can become impassable during or after storms with deep mud, rocks or other hazards. If the road becomes impassable, the detour to get around the slide via the M5 and 17N02 Roads (high clearance vehicle recommended).