The detour will begin at the junction of HWY 350 and County Rd 4602 (Little Sheep Creek). Travelers will then head east on HWY 350 to the town of Imnaha, and turn right (south) on County Road 727 (upper Imnaha River Road), which becomes FSR 3955 at the Forest boundary. The detour will end at Gumboot Creek on the 39 Road.
Construction continues on the southern 18 miles of FSR 39. This section will remain closed and gated until June 15 from the junction of FSR 39 and FSR 66 to Highway 86.
FSR 66 is currently clear of snow and ice to Twin Lakes. Beyond Twin Lakes the road is blocked by four feet of deep snow. FSR 39 is clear of snow and ice, but is not maintained until June 15. Rocks remain in the roadway and travelers are advised to use caution when traveling forest roads.