Rideau Canal bridges and dams are prime candidates for sale.

 The United Nations believes that the Rideau Canal has historic and cultural value. And the waterway is legally protected by UNESCO:

"A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated for having cultural, historical, scientific or other forms of significance."

Did Parks Canada and Environment Minister Catherine McKenna sell $8 billion dollars worth of infrastructure in 2018? ("Parks Canada to look at divesting highways, bridges and dams. Cash-strapped agency examines whether to sell or divest non-heritage assets worth $8.3 B" by Dean Beeby, CBC August 26, 2017.)

The Bank Street Bridge over the Rideau Canal in Ottawa. The photograph is included in the article "Internal Parks Canada report looks for ways to make money by selling, transferring assets." by Dean Beeby, CBC News 2018.

Canadians have already lost publicly-owned bridges:

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The market value of the Dow's Lake parking lot is $4,021,000. Seven hundred and fifty trees will be removed from the Experimental Farm including the Historic Hedge Collection near the DARA Tennis Club.

The Historic Hedge Collection.

 Land mass on the Sir John Carling Site allocated to the hospital in the year 2016: North Boundary - Carling Avenue between Bayswater and Preston Street.

East Boundary - From Preston Street to Prince of Wales Drive.

South Boundary - From Prince of Wales Drive (600 metres) to 90 degrees west to Birch Drive.

West Boundary - From Birch Drive/Maple Drive up to Winding Lane and back to Carling Avenue at Bayswater (quarter of a circle around the Dominion Observatory.) (Information that was given to Member of Parliament Pierre Poilievre from Public Services and Procurement Canada.)