Authorities say a Kentucky transportation worker has died while ploughing snow-covered highways, bringing the total number of deaths from the massive snowstorm hitting the US to at least 11. The Kentucky Transportation Cabinet said in a statement that Christopher Adams on died Saturday in Christian County. The statement says Adams called a supervisor about 5:50 am, saying his snowplough had slid into a ditch along Kentucky Route 115. When the superviser arrived, Adams was slumped over in his truck seat and unresponsive. An ambulance was called to the scene. Paramedics called a coroner. Officials say the 44-year-old Adams had been working since about midnight. His family has been notified, but a cause of death has not been released.