Updated: 10:58 PM MDT May 6, 2021 MORRISON, Colorado — A fatal crash caused backups on northbound Highway 285 in Morrison. West Metro Fire Rescue (WMFR) said a semi rolled over, causing the truck's cab to separate from the tank it was hauling. The truck cab went down a steep incline and the driver was ejected, WMFR said. Colorado State Patrol (CSP) said it was assisting Morrison Police with the crash. The crash happened near milepost 248 which is just before Colorado Highway 8. The northbound lanes of 285 were closed at Parmalee Gulch Road, which is the road to get to Indian Hills, according to a tweet from the Colorado Department of Transportation (CDOT). One lane has since reopened.