Lower
When a substance is dissolved in water or some other solvent, the freezing point is lowered. Every solvent has a different susceptibility to colligative effects. Adding about 68.5 grams of salt to 1 liter of water lowers its freezing point by 1.86 degrees Celsius (3.4 degrees Fahrenheit). When salt is added to an icy road, it dissolves into water above the ice and keeps it from freezing even though the temperature of the road is lower than 0 degrees Celsius -- the freezing point of water. This happens because solvent molecules must order themselves into a lattice when freezing, and dissolved particles interfere with the process. In addition, heat is released when the salt dissolves, which melts some of the ice below, which then allows more salt to dissolve in a kind of chain reaction.