This cache is within Marshall County's Three Bridges Park...but I only saw 2 bridges...one is 'out' and the other 'closed'. I have an e-mail from the county conservation board (and a trail map!) with an OK to place it. It's within the park, please avoid the private drive southeast of the park.
The bridge and approach from the north is closed to vehicles but I think it's open to pedestrians, brave pedestrians. I recommend you approach from Quarry to the south. Pack along a picnic or your fishing pole if you've never been to Three Bridges before. Climbing gear is optional.
Due to derecho damage from August 10, 2020, the cache is now a small magnetic tube which replaces all the other containers from over the years...a camo peanut butter jar, a bison tube, an ammo-can-on-a-chain (taken 3 times). It was replaced and relocated on September 20, 2020 (previously on 21-Dec-2019, and 01/27/2018) and the original contents are gone (again).
Please use caution while hunting this cache. The trails here can be very slippery at times and there are broken barbed wire fences too (don't cross over them...it's private property to the east).