Blowing snow and cold temperatures are impacting highways Monday in Colorado. ❄️ Northbound Interstate 25 was closed at Plum Creek Parkway in Castle Rock for multiple crashes, as of 10:30 a.m. Monday. The Douglas County Sheriff's Office said multiple crashes were reported on I-25 near Mile Marker 180 near Castle Rock. Latest details at the link in our bio! ❄️ #9wx #cowx #denversnow #coloradosnow #9news #cdot