first

[snoopydoops]

what was the name of Canadas first motorway

[KJN]

This is the best I can find;-

Trans-Canada Highway History
As early as 1910, there were calls for a national road across Canada. The first post of the Canadian Highway was planted in Victoria in 1912. The first successful crossing of Canada by car was in 1912, when Thomas Wilby supplemented existing dirt roads with railway rights of way along the rugged Lake Superior north shore and over the Rocky Mountains. Some sections of the highway were paved early on (for example, Highway 17 in Northern Ontario was paved in 1937), while others had major construction challenges and would require federal support.