Westbound lanes no longer in use. NS 6911 & NS 9151 lead CN 529 on CN's Montreal Sub. Of note is that the westbound lanes of autoroute 20 were on the south side of the tracks until a couple of weeks ago (well, they're still there, but no longer in use). They are now located where the Turcot Yard used to be, out of the sight at left in this photo. The CN tracks here will also disappear during 2018, with CN's main line moving to the left as well.
