From my Ontarian point of view, personally I would expect a 6th Avenue North to run generally north-south, and a 6th Avenue East to run generally east-west (*). This street does not, supporting an argument that this is a quarter designation.

As a counterexample to Calgary and Edmonton, Seattle does expand their "NW"/"NW"/"N" etc quarter designations to format like "Northeast 65th Street". But we'd probably want to make the change along with other central/western Canadian cities, or keep consistent with them?

(*) in local reckoning - for example Montreal's "east" is northeast but they do use it consistently