A Colorado man lost his life on a Morton County road Monday evening. Forty-seven year old David Walz of Arvada, Colorado was pronounced dead at about 9:50 p.m. The accident was at about 6:30 p.m. Walz was headed north in a semi truck on Morton County Road 2 about 15 miles north of Elkhart when the right side of the vehicle went off the right edge of the road. When the vehicle went off the edge, it rolled once landing on its wheels.