Here's a
Wikipedia entry about Brisbane. I can't make an informed remark about infrastructure, only in certain parallels that exist (and don't exist) in population, city, and aiport traffic. this article is informative and interesting in the aspect of comparison and contrast
first, the city itself
http://en.wikipedia.org/wiki/Brisbane
then the transit system
http://en.wikipedia.org/wiki/Transport_in_Brisbane
and the airport
http://en.wikipedia.org/wiki/Brisbane_Airport
and the city rail network (find the map!)
http://en.wikipedia.org/wiki/Citytrain