Having watched the investigation from pretty much the beginning my only logical conclusion is BG or as prefer to call him



was lurking and watching for a target.
He saw the girls either at the north end of the bridge or at some point as they were crossing the bridge.
I think he then travelled either by vehicle or foot depending were he was viewing from,to the south end of the bridge, but not via the bridge, hoping to intercept the girls.
I think he accessed the bridge from the south side heading north and walked past the girls who were heading south or could even by this point be actually at the very south end of the bridge.
He then turns and starts heading south in the same direction as the girls and in effect traps the girls at the south end of the bridge.
The south end appears from what I have viewed, a lot more isolated,I believe he would have wanted to take them off the bridge at the south. Much less chance of being spotted.
I am good with maps and directions but this has been a complicated crime scene to fathom for me, I truly believe this



has in depth local knowledge.
I think he took them over the water to an area he knew was isolated but also to throw LE off his tracks, he probably crossed back over the water after the crime but at a different spot to get back to his vehicle.
I do think he had a vehicle nearby on the south side or a safe place because he would absolutely have been seen by someone in a state of disarray, as at the very least after the crime he would be wet due to creek crossing.
If he was travelling a main route/highway could he have seen the girls on the bridge and pulled off and drove at least close to the south end of the bridge hoping to catch up with them, I don't know if it's possible to see the bridge from a main route??
All absolutely my own opinion