There is a pull off right by the bridge on Bear Den Road. The Rumbly Bridge was erected in 1907 over Duncan Creek. It is possibly the only remaining metal truss in Wisconsin specifically designed as an ornamental park bridge.
Over the years people have been adding padlocks, The tradition of placing padlocks on bridges is practiced on the bridges of the Seine River in Paris, where couples inscribe their names on padlocks, lock it on the bridge and throw the keys into the river. The ritual symbolizes love locked forever.
This practice has caused structural problems to some bridges and some people view it as vandalism. Since this bridge no longer has car traffic, I don't think there will be much problems.
Cache is NOT a padlock. No need to climb over or under bridge. Please replace where found so it doesn't get muggled. .
There is also an Adventure Lab stage here. Kind of a 2-for-1!