Then decisions about what to do with the money have to be made. Some of the money is spent on gathering information about what projects to spend the money on. Actually, this is the stage where a great deal of imagination is used to find ways to spend the money just coming to a decision about where to ultimately spend whatever is left. Bureaucrats cost money too.
Then comes the final stage, the actual project itself. At this stage even honest people tend to take the attitude "damn the expense", and the dishonest people will just take whatever they think they can get away with.