All available Canvec data in northern areas were checked less than 10 years ago using much higher resolution imagery than what is available in OSM. Everything is not perfect but way much accurate than nothing.
I used to work on the checking process mentioned above!

I still probe YanTremblay edits from time to time. He has been contacted and seems to conform to best practices now...

Yan, un commentaire? il semble que tu ais éliminer le pont jacques-cartier existant pour en faire une nouvelle version sans piste cyclable...

Yan, il semble que tu ais détruit de nombreux segments de routes à l'entrée du Pont Mercier...
Pourrais-tu les recapter svp?

Pas de limites extérieures (outer) au multipolygone. Correction effectuée :-)