This cache is located in a South Dakota State Park and will
requirer a one day pass to enter the park.
Sica
Hollow State Park is a great area to camp,hike and
Geocache.
Lots of bridges on the hiking trails and waterfalls.
You will want to park here to get on the trail.
45 44.788N
97 13.095W
Look for the "Trail of the Spirits".
Hike the trail until you come to the twin bridges.
Once you find the twin bridges you will have to leave the hiking
trail. 
Have fun and enjoy.......