The project will optimise the leisure environment for the local community and improve facilities for schools.
Upgrades will include adapting the course landscaping to increase spectator capacity and encourage members of the public to get involved in the sport.
Parking areas will be extended to cater for an anticipated 10,000 visitors each weekend
The project will also involve the creation of a new facility for athletes, with state-of-the art training areas, gym equipment and offices for coaches and physiotherapists.
Patrick Parsons MD Peter Stienlet said: “It’s a privilege to be involved in creating a legacy for the local community at the Lee Valley Olympic course.
“The upgrades to the facilities will also secure the course’s future as a world-class centre for sporting excellence, an equally important legacy.
“This continues our involvement in engineering world-class white water projects on an international scale.”