Chiming in late here but I can answer the 'phone GPS' question. Actually, I answered it many threads ago
here.
Short version is:
If you try to find Monon High Bridge via GPS or Google Maps, you get sent to the south side of the bridge via N625W, which deadends at a closed gate with 'no trespassing' and 'private property' signage. There is no public access to the bridge from that end.
Longer: To get to the red gate access point, you drive along W300N until you see the gate across from the Mears property. As the GH driving video shows, there's no parking there anymore.
TeaTime is very much correct in that you'd have to know about the location to find it. There's no indication of the bridge at that access point (you can't see it at all), although when you go through the gate, you'll see the signs for the 500+ steps down to the Mary Gerard Wildlife area and then another sign that points to the bridge.
If you're not familiar with the area, you'd really have no idea what the bridge is, how high it is, access, etc. From the north side entrance, you'd have no way to know that you could go 'down the hill' to the driveway when you got to the other side of the bridge. Or where you'd end up when you crossed the creek. And so on.
When we drove out to the bridge, it took us a number of attempts to find the red gate because we kept getting GPS'd over to the locked gate on the other side. We had two cell phones and a vehicle GPS and after the first few failed attempts, we were driving back and forth on the same roads, occasionally erupting into arguments out of frustration. We even drove back towards town and started over again at one point. I think we finally found it by locating the Mears property.
So it's definitely not a stumble-upon kind of place.
