Really intriguing thoughts. Very early on, LE seemed to suspect the killer had left the immediate Delphi area.
From Feb. 20, 2017 (BBM)
All-out manhunt underway for main suspect in murders of two Delphi teens
[“We are asking people that were driving through the Hoosier heartland that might have seen a hitchhiker or saw somebody walking. We are asking people in Logansport all the way to Lafayette if they saw somebody around that late afternoon on February 13 walking down the roadway. We would like to know about that person,” said Indiana State Police Sgt. Kim Riley.
Police believe the man may have changed his look to try and hide his identity. They are asking every Hoosier to keep their eyes and ears open.]
Fast forward to the April 2019 presser. Now they're asking about a car parked at the CPS lot between noon and 5pm. It's significant because it has to do with their belief he got around quickly that day. This coincides with a new sketch done just days before they started asking about people walking along the roadside. So which is it? Was he walking, or driving? Did somebody drop him off at the trails, or did he walk somewhere afterwards and get a ride back to his car later?
Did he go through the woods and come out along the highway to walk back to his car? Or did LE, early on, simply not think the car and/or younger person represented in the sketch was involved?
So many questions.
I always wondered about that law enforcement question in the early days, regarding someone walking along State Road 25. I think it would have been possible. You had the great map back on page 42 of this thread. I really appreciated it because it's very similar to the route I unintentionally took back to my car after visiting the bridge in November. I crossed the bridge but wasn't going to do it on the way back, not after two stumbles. I thought it would be simple to walk back under the bridge, crosss Deer Creek to the right, and rejoin the trail back to Freedom Bridge.
It was anything but simple. I never managed. But throughout that traipse through the woods I kept thinking how easy it was, and why has it so seldom been proposed for Bridge Guy? The only problematic area would be the initial segment back under the bridge and then the next 200 yards or so. That is fairly open and not far from the beginning of the bridge. Beyond that there was plenty of nothing. The only thing I ran in to was the tree of shoes, which I found out later was a tribute from the homeowner to a son who died young.
Unlike your proposed route, I remained close to Deer Creek and followed as it looped, looking for any opportunity to cross. Not close. It is far too steep on both sides. That is the only problem I saw with your proposed version, the segment between .77 and .87. That is not a gentle walk on level terrain across Deer Creek. It isn't anything like the area where Libby's shoe was found. Deer Creek near the early stages of the Monon High trail is down a severe embankment, and also the creek is quite yucky.
Unfortunately I didn't take many photos of that area but this one demonstrates the severity of slope -- enough to cause a mudslide -- and also the mucky nature of the creek. This is to the right of the early section of the trail, perhaps 60% of the way between Freedom Bridge and the trailhead:
Imgur
Your map on page 42 had Bridge Guy crossing somewhat right from that photo. I think the slope and the difficulties would remain. Anyone emerging in that area would really be wet, muddy and exhausted. Very high likelihood to draw attention to himself if anyone noticed.
In contrast, the route I ended up taking wasn't bad at all. From your map at .77 I ascended the bank to State Road 25. That is exactly where I entered, just prior to the highway bridge over Deer Creek. The shoulder was plenty wide. Maybe 2 cars zoomed past while I was walking the overpass. Once I passed the bridge I moved onto the grass at right. I happened to take a picture there, solely to remind myself of my travails back to my car, but it is also useful in this discussion:
Imgur
From that point you've got traffic seeing your back and nothing else. Those vehicles are headed toward Logansport. The ones coming toward are headed toward Lafayette. Best of luck to anyone on either side to describe you or own anything but a vague memory of yeah...there was a guy walking alongside the road.
And from the area I took that picture it is an easy walk underneath Freedom Bridge and then short distance around the corner to the spot of that abandoned building.
I'll try to paste the map from page 42, courtesy of TL4S:
https://www.websleuths.com/forums/attachments/exit-jpg.233561/