I've known about this spot for a long time, and It's great for shorebirds (I've sometimes seen well over a hundred while driving by - and that is only the large visible stuff like yellowlegs, killdeer and Pluvialis plovers), but I've never wanted to stop on the highway and there is no way I can tell to see in otherwise without hopping fences. If access was possible this would be, no question, the best spot in the GTA for shorebirds when water levels are right)
I've thought a few times in the past year about talking to the 407 about a trail and viewing platform coming from ninth line, but never actually done anything more about it.