What is an advantage and disasvantage of a suspension bridge?

PRO: they can be built over waterways, and can be built high, letting taller ships to pass under

PRO: Temporary supports in the middle to keep the bridge from falling aren't needed to keep the bridge from collapsing

CON: They are very flexible and can bend under heavy loads if they are in one spot

CON: They use expensive foundation work with all the load going on if in soft ground