Entering in the 21st century, it became obvious that the Montreal Convention Centre was no longer in a position to host conventions requiring over 100,000 sq. ft., nor simultaneous events. To bring its installations into the new century and to continue being a reference destination, the Société québécoise des infrastructures (Quebec Infrastructure Corporation) decided to expand the building. From its original 35,020 sq. m., the Convention Centre was expended with an additional 28,155 sq. m., representing an increase of over 75%. The expansion was to be located over the Ville-Marie Highway, thus requiring its transformation from highway to tunnel. Directed by the SQI and done in fast-track in built-design, the project included:

Double the exhibition space, from 9 425 sq. m to 18 590 sq. m.

Increase spaces for congresses and meetings;

Improve the hotel infrastructure and urban environment;

Increase food production and service capacity;

Build a 600-space underground parking.