'The new Arizona Cardinals Stadium sets a new standard for covered stadiums, with bold architecture and state-of-the-art operable roof and field structures. The stadium will be the second NFL facility to feature a retractable roof and the first in North America to feature an operable playing field.

It is the first retractable roof in North America to ride on inclined rails and its two main 700 ft. long lenticular roof trusses provide the longest clear span of any retractable roof stadium in the United States. Another signature achievement was realized when a 5,400-ton section of the roof structure was assembled on the ground and lifted into place as a unit in February of 2005...'