I looked it up. Highway 104/2 is the only road into NS.
Just inside the line is Mustafa Mohamed Gateway Campground.
Hmmm...
I looked it up on Google Maps. There are a couple of back roads that can get you in from N.B., but for true, safe goods transport, it seems, the only route is N.B. 2/N.S. 104.
Ooh. That would be an awful place for, say, a multi-lane semi accident. Speaking purely hypothetically, of course.