A Jefferson County Sheriff Deputy and a civilian were both involved in the crash that occurred just after 11 a.m. on Northbound US 285 near Elk Creek Road, Mark Techmeyer with the Jefferson County Sheriff’s office confirmed.
Alternate routes and long delays are to be expected, according to a tweet from the Colorado Department of Transportation.

http://kdvr.com/2018/01/21/jefferson-co ... -on-crash/