C.R.S. § 42-20-304
42-20-304. Emergency closure of public roads
42-20-304. Emergency closure of public roads. Nothing in part 1, 2, or 3 of this article shall limit the authority of state and local authorities to close public roads temporarily if necessary because of any road construction or maintenance, an accident, a natural disaster, the weather conditions, or any other emergency circumstances resulting in making road conditions unsafe for travel by motor vehicles transporting hazardous materials.