They have a healthy communications budget which would be (less) necessary if we lived in a day when people trusted the government and its various arms to do good quality work in the general best interests of the public.
There is also a general level of stupidity in the universe whereby people can live next to the construction without any awareness of what is being built or when it will be done. Amazingly, there are people in the city who have no idea that a major 'subway' (ok, on UT I'll make sure I say rapid rail transit) line is under construction.