A man was killed in a motorcycle crash along the Mountain Parkway in Clark County Tuesday night. Deputies say the motorcyclist lost control on the on-ramp to the Mountain Parkway from I-64 and hit the guardrail around 10 p.m. The victim was declared dead at the scene. Deputies say the victim was not wearing a helmet. Officials have not identified the man, saying only that he was around 50-years-old and believed to be from Powell County.