I will be arriving by Eurostar, and want to take Bus 65 to my destination.
The Gare du Nord stop for Bus 65 leaves from 183 rue du Faubourg Saint-Denis, which looks to be right outside a station exit at #181.

If I can go through the station directly to that exit, it would be the quickest way for me to catch Bus 65, but I can't tell if that's possible. There may be a railyard in the way??? Google street view shows something outside, but it's not clear to me just what.

So... is that exit accessible directly from the main part of the station? Or would I do better just to exit at the front, walk to F St-D, and go to the Valenciennes stop, which is to the right at #142?

Thanks for any help you can give me.