The 2012 Olympic Stadium project will be completed this afternoon.
International Olympic Committee member Frankie Fredericks, a four-time silver medallist sprinter, will help lay the final piece of turf at the site in Stratford, east London.
Completion of the building work at the stadium, which began in May 2008, is a “huge milestone” for the £9.3 billion Olympic project, particularly as it comes with an “exemplary safety record”, according to the Olympic Delivery Authority.
The 80,000-seater stadium for the Games is set to be shrunk to a 60,000 venue for football, athletics, concerts and community use, and the new home of West Ham football club after 2012.
It stands 60 m above the field of play and has an 860 m perimeter. More than 800,000 tonnes of soil - enough to fill the Royal Albert Hall nine times over - had to be taken away and 33 buildings on the site had to be demolished before construction could begin.
More than 5,250 people have worked on the project since construction started in May 2008, with the workforce peaking at 650.
More than 5,000 reinforced concrete columns were installed into the ground, up to 20 m deep.