A man and a woman once moved into a house near a bridge.
A few days later, there was an automobile accident on the bridge.
The next week, there was another.
The week after that, yet another.
Finally, the man climbed down under the bridge.
“Look,” he yelled. “I don't know who you are or why you're doing this, but my wife is a witch, and if you don't stop, she's going to come down here and give you what for.”
Then he climbed back up and went home.
After that, there were no more accidents.
I heard this story from folklorist Sabina Magliocco, who heard it directly from the people involved.
Make of it what you will.
Above: Bremen "Troll" Bridge
Bremen, Indiana