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Tree vs. Guide Rail: Sheared Bolt
Spotted on a walk along the Mighty Wappingers Creek after a storm with plenty of gusty winds:

Tree-smashed guide rail The tangle of branches and logs came from a tree that fell across the road from the far right side and put that crease into the guide rail. The vertical stump seems unrelated to that incident.
A bit of rummaging at the base of one post produced a victim:

Tree-smashed guide rail – sheared bolt – side The impact produced enough force to turn the rail brackets into guillotine metal shears against the posts:

Tree-smashed guide rail – sheared bolt – end It’s not a clean shear cut, which isn’t surprising under the circumstances.
An ordinary ½-13 Grade 8 bolt has a 17 k pound proof load: popping that bolt required a mighty oomf.
Memo to Self: stay indoors during windy storms!