wandering_idiot: Well I went to check on this one and found the cache about 20 feet from where it was supposed to be, opened, and burned!
The bridge it was under had been destroyed (on purpose or otherwise) and a new bridge built 10 feet down stream.
This is the second time it has been destroyed so I think I'm going to archive it. Thanks for everyone who visited and sorry for any lost TB's.
I will be looking into this matter with the assistant principle to try and find who did this.