wikipedia
Replacement of Champlain Bridge
On September 20, 2007, a major French-language Montreal daily, Le journal de Montréal, published a story about federal government plans to build a new 10-lane span next to Champlain Bridge rather than face the increasing maintenance cost of the aging structure.[4] Federal minister Lawrence Cannon confirmed that his ministry is seriously considering the prospect of a new bridge.[5]
In October 2007, Novaroute, a private firm, revealed a plan to construct a two-story tunnel bridge under the Saint Lawrence River that would also collect tolls based on the time period. In Novaroute's plan, one level would be for buses and trains while the second would be for all other vehicles except tractor-trailers. The tunnel would be built under a public-private partnership and take five years to complete.[6]
In August 2008, the Canadian federal ministry of transportation confirmed that studies and scenarios were ordered to build a new bridge within 10 or 15 years. The new structure would likely be 8 to 10 lanes wide and include a light rail train to connect the south shore to Montreal.[7][8]