In 2001, a pilot diesel-powered light rail service project, the original O-Train known today as the Trillium Line, was introduced. The local government announced expansion plans for the light rail to other parts of Ottawa, including a possible link to the Ottawa International Airport. Service to Gatineau would have also been possible, over the nearby Prince of Wales railway bridge over the Ottawa River. However, on December 14, 2006, City Council led by Mayor Larry O'Brien cancelled the north-south light rail expansion project. A new model of the project, to have a citywide integrated light rail system, was made, with work beginning in 2013 and will be completed in 2023. This new project envisions fully grade separated rapid transit service on the original Transitways from Baseline station or Moodie dr. in the west to Trim Park and Ride in the east. The gap between the east end west branches of Transitway will be replaced by a new downtown Subway tunnel under Queen and Rideau streets with three underground stations. The O-Train Trillium Line will be extended to Riverside South and will include a spur to the Ottawa Macdonald–Cartier International Airport, thus creating direct airport to downtown service. As for the suburbs, they will be served by 65 km of new Transitways. The first phase of the project, called the Confederation Line includes 12.5 km of rail between Tunney's Pasture and Blair, including the downtown subway.