2/3/17 Effective immediately, Clark County ATV & Snowmobile Trails located on both Public and Private lands are open for both ATV & Snowmobile traffic except for the following closures: Thorp Sno Raiders Trail from intersection 36 to 78, Spencer Swampstompers Trail located north of Spencer running East from Corridor 25 to Marathon County and GWR Riders & Boomtown Sno Chasers trail from intersection 76 to 45. Ride with caution. Watch for icy patches and rough areas in open fields and for possible open creeks.