Estimates of this latest snowfall were right around 6 inches in Washington County.  County Engineer Mitch Burdick says the weather provided them with a challenge when dealing with the snow.  Because the wind was high and causing the snow to blow, they could not put down chemical, which is either rock salt or liquid salt, as the snow would freeze and become icy as it went across the road and stuck.  Also, the chemical doesn’t work with temperatures below the high teens, so he says they kept plowing the roads to keep them clean.  Crews were out at 4 AM on Wednesday and were out all day.  Burdick says the county has more salt coming in, as he ordered at about $53 per ton, but he has heard those buying salt now are paying upwards of $175 to $200 per ton, as it is in high demand.  He says the county has a shipment due at anytime to replenish what has been used so far this winter.  Richard Schuette, who is in charge of the Nashville City Street Department, says they did not have the problem with drifting snow in town, so snow removal was not a problem this time.  Crews were out Tuesday night from 6:30 to 10 PM and then again beginning at 5 AM on Wednesday.  They got back out in the afternoon to get rid of some of the slush to keep it from refreezing.  He says they still have 50 tons or so of salt, which should last another 3 more storms, but after that there will be a problem.  More snow is forecast for this weekend.