Where is this path and what is its purpose?
UPDATE: Nobody got it dead on, but Chris was the closest below, correctly placing this path in LaSalle. A few of you also correctly guessed that there is a rail line on the right. Put that together and you get the right answer.
It’s a path that connects Airlie St. to the LaSalle train station on the Montreal-Delson/Candiac commuter train line near the rail bridge to Kahnawake.
LaSalle has the distinction of being the least-used commuter train station on the island by the number of train stops: six every weekday in each direction, or 60 each week. (Compare that with its busiest station, Central Station, which sees 349 departures and arrivals each week, or Lucien L’Allier/Vendôme/Montreal-Ouest, which has 259 trains a week going through that corridor.)
And it shows.