Access to airports will be limited not by ACN but wing span.
In fact the A380 will not do as much "damage" as the B777 pavement wise.
The B744 is a Code E wingspan whereas the 80m span A380 is in the new Code F categorey. The main landing gear is wider too requiring an increase in width of taxiway.
Airbus are pushing ICAO for agreement that their plane can operate just like a 747 but the jury is still out.
Meanwhile airports with the huge infrastructure change lead time need to know now to be ready for the aircrafts introduction
Sir George Cayley