The man I spoke with at the City Building dept was so Johnny on the spot about the creek and culverting system. When he said the culverts system had been searched not long after she went missing I simply believed him, that they would have found her if she had been trapped inside. I might be wrong, but I would think searching or looking thru culverts would be done by the maintenance crew for the city, not LE. Correct me someone if I am wrong.
What I think we need to really look at the 2 possible places for the scene of the crime and take a look-see at everything in that vicinity. We know that is between 5th and 6th on Maple and behind the PD station over to Sam's Canal where we learned that possibly her overshirt and a shoe were found. I just can't see this little friend of Lindsey lying about that. She heard it from someone, and it just has to be she has been interviewed by police as she was a close friend.
Back to the scene of the crime! That is why these officers spent 2 days searching the neighborhoods around KK and MB's homes. And the bridge. Even though they searched all the culverts, there still might be some clue still waiting there to be found. It could be where she was tackled down, and if they did find these items there, reexamining photos of the ground might shed a different light now that the search has been more thorough.
The old man 'Mark' who was quite vociferous in trying to let jvk know there was someone in town who didn't like Lindsey, I read he lives alone right now. Is it possible to track this guy and see how close he lives to where Lindsey could have walked that evening?