infrastructure work at the stadium site began in late june 2006, and a ceremonial groundbreaking took place at the stadium site on september 30, 2006. the beginning of construction on the stadium itself along with the unveiling of the stadium's logo took place on july 11, 2007. site preparation and foundation work continued through the summer and fall of 2007. more than 8,800 tons of steel that make up the stadium's skeleton was put in place between january 28, 2007 – june 28, 2008.