Former Ontario finance minister Dwight Duncan speaks at the legislature. (Photo: Frank Gunn/CP)The 86-year-old Ambassador Bridge between Ontario and Michigan is the busiest border crossing in Canada. Current board chairman Mark McQueen, appointed by the Conservatives in July 2014, recently announced his intention to resign, telling the Windsor Star newspaper he expected the new Liberal government in Ottawa would want their own person to oversee the $2.1 billion bridge project. Duncan's appointment comes on the same day the Liberals set as a deadline seeking the voluntary resignations of 33 federal appointees who had their appointments renewed or extended by the Conservatives just before last summer's election call. "In order not to delay the construction of the new Gordie Howe International Bridge and recognizing the importance of this project for Canada's economy and for the region, Mr. Duncan will be taking on the role on an interim basis until the new appointment process is established," said a Friday news release from the office of Amarjeet Sohi, the federal minister for Infrastructure and Communities. Duncan is a native of Windsor and represented Windsor-area ridings in the Ontario legislature as a Liberal from 1995 to 2013. The Windsor-Detroit Bridge Authority is a not-for-profit Crown corporation, overseen by an appointed board of up to five members, including president and CEO Michael Cautillo.