The ODA is seeking multi-disciplinary teams including architects, structural engineers and landscape architects to design the footbridge which will span 26m over Carpenters Lock on the River Lea Waterway, which snakes through the heart of the Olympic Park.
In a statement, the ODA said the winning design would cater for both Games and legacy use. In legacy mode the structure will feature two permanent separate spans over the River Lea, each 6.5m wide.
During the Games a temporary 41m-span bridge will be constructed in-between and joined to the two permanent spans to create a single 54m-wide structure to accommodate visitors to the 2012 spectacular.
ODA director of infrastructure Simon Wright said: 'The design competition will ensure that we continue to aim for the highest standards of design excellence, not just for the key venues, but throughout the entire Olympic Park.'
An OJEU notice will be posted later today (8 May) and the winning design team is expected to be announced in October.