Brisbane 's Victoria Bridge may become a green-bridge only - scrapping cars - as Brisbane City Council on Tuesday night launched a major campaign to have the Queensland Government approve the change.

From Monday an extra 50 buses an hour will be added to the 200 buses an hour that already crawl across the Victoria Bridge in peak hour, because of road closures linked to the new casino.

Victoria Bridge has only two lanes dedicated to buses, with cars using the other two lanes.

The major changes to Brisbane's bus routes begin on Monday, December 12 when the major road closures in Brisbane's CBD will let work start on the multi-billion dollar casino resort complex in Brisbane's Queens Wharf Precinct, between George and William Street.