The job will dramatically improve views and increase the stand’s capacity from 2,800 to around 2,900 at the home of English cricket.
Construction information specialist Glenigan confirmed that BAM’s bills had been called for the job fighting off competition from Buckingham, Galliford Try, ISG and Willmott Dixon.
The new Warner Stand forms the first phase in a planned 14-year investment plan worth up to £200m. This will see the Allen, Tavern, Compton and Edrich stands also rebuilt.
Designed by Olympic Stadium architect Populous the new stand will have two tiers of seating built on a steeper gradient than the current stand.
It will be covered by a semi-translucent fabric roof, supported by a timber structure, a canopy design being used for the first time in Britain.
The material will help to reduce shadowing from the stand on to the playing area, while offering spectators benefit from both shade and a high degree of natural light.
