Originally Posted by
chuljin
Sorry to quote more than I intend; posting from my phone.
The Treasury will actually reimburse you for your torn-up (or burned-up, or water-damaged) $100 ... IIRC the rule is that any note at least 51% extant has its full value.
Excuses, excuses!
(I know, I have the same problem when I'm using the phone.)
It is 51%, but when I read the OP, I took "ripped to shreads" to mean it was destroyed and he/she could only find some small portion.
Even if Amtrak did what the Treasury does, I highly doubt that you could take a bag full of shreads down to your staffed local small town station and get a new ticket for the train departing in 40 minutes!
I think they would have to be sent to someplace, and it may take many weeks or months to get a new ticket. That would not help you for today's departure!