also many church & school Picnics were held near covered bridges for a reason.
If all of a sudden there was a downpour everyone could run for cover.
they were also used for lovers meetings
and Halloween Pranks. Kids used to hide in the rafters & jump down at the
best time to scare their intended prey.
although I havn't read of any, it comes to mind,
Highway robbers may have also used that trick.
and don't forget a covered bridge is a easy thing to remember.
so if you needed to hide something or set up a meeting,
the covered bridge could be the perfect spot
Naturally they don't last forever so some have been washed away by floods,
some repaired & some just replaced, But where ever a bridge crosses a creek,
there is a chance a Covered bridge may have been there
or near at one time. check them all if you can.
Example, This one was destroyed in '72 by a Flood & bypassed
this one was Destroyed in flood of '72
Rebuilt Burned by arson(s)
re rebuilt & turned into historic view
on new caches, I would guess allot of covered bridges have Geo caches.
I know of one in my area.
http://www.geocaching.com/seek/gallery.aspx?guid=464a9cbd-5018-47a4-8db2-6c73c4e3f25e