THE NEW WEMBLEY STADIUM
It's been noted that some computer geeks found welding flaws in the arch structure must have been reflecting on a wobble factor of The New Thames Footbridge. Of the microstran.com the consortium (list of projects)

The Arch

The most striking highly visible feature of the new stadium will obviously be the 133 metre tall arch that sits above the north stand. The steel arch is 315 metres long and will become the longest single roof structure in the world. It will be visible right across London.

The arch supports all of the weight of the north roof and 60 per cent of the weight of the southern side. By using an arch to bear some of the weight of the southern roof it is possible to retract the south roof to allow light and air onto the pitch.

The arch also ensures that there are no pillars in the new stadium which could obstruct the views of fans. Offical Site