Icicles are beautiful, but they can be very dangerous. Icicles have been reported fatal since the 1700's, from falling on people and causing accidents to property being reported. Icicles can cause damage on many structures such as buildings and homes, once ice forms layers the weight of it can cause the structure to fall or break off. Icicles can also be formed on bridges over streets and highways creating a potential danger for nearby motor vehicles passing by.