Linden Drive is private, the gate might be left open, but somebody will probably run you off if you go in that way. If I'm reading the article right, there will be barricades restricting foot traffic underneath the bridge--So you can't get through that way. If you're up for it, I'd suggest parking where you usually do, wade across the creek, climb up the ditch next to the bridge, cross the road, walk back down the ditch and that would put on the other side of the bridge.
You could do that on the side with the parking, but it's much steeper and harder to get back down on the other side too.