I try to keep in mind that a lot of locals didn't know where this bridge is located, and thus wouldn't know the park and its' surroundings. It reminds me of one of my favorite urban parks, and it's an abandoned RR property, like so many other neat parks. It's there, but not many locals know it's there. A lot of us following the case here on WS probably know the area surrounding the crime scene better than some or even a lot of folks in Delphi. I don't know how long the parking area and the trail from it and leading to the old railroad RoW have existed, but I'll hazard a guess it's under 15 years. The bridge itself still is private property, owned by CSX, which a lot of folks would be averse to walking on for just that simple fact.
I think some or even all of the above facts and factors are things the killer or killers were banking on, in order to carry out this horrific crime. Just the walk to the bridge takes roughly 6-7 minutes, according to this great video put together by Gray Hughes, and in the comments he mentions that he sped up the walking part of the video 10%:
[video=youtube;DZzBCyLSI0E]https://www.youtube.com/watch?v=DZzBCyLSI0E[/video]
The above video contains clips from at least one WS member (the part of the video showing the "down the hill", and across land to the creek side), plus someone who walked from the parking area to the bridge, and an MSM video, which is at the very end, showing the crime scene.
I agree re: a timeline, and quite frankly it might help jog some memories of people who have information about a possible suspect. MOO is the person or persons involved were long gone by the time the girls were supposed to be picked up, which was roughly 3:30. A gal who was there around the same time said she saw and heard nothing out of the ordinary, which also indicates to me no one was there looking for the girls, yet. So we have a drop off time of 1:45 (according to the latest info I've seen), last SC photo uploaded at 2:07, and somewhere between then and 2:30 they were abducted.
Folks, that's under 45 minutes, which tells me they could have been deceased in under an hour, maybe a little more than an hour, after being dropped off.
The killer or killers had ample time to escape, before anyone would be looking for the girls. So where do you start looking for them? From the parking lot, down the old right-of-way/trail, to the bridge. When was the exact time that anyone was at the bridge looking for them? We don't know.
Emphasis mine, this is a comment under GH's video:
Either the killer was able to see them get on to the bridge, without being noticed, or maybe the girls did see him earlier on, but were not alarmed until he got on to the bridge? Any way you cut it, we're talking a very short time frame.