Located in Lower Meramec Park. Cache is NOT accessible from I-55. It is dangerous! Do not even attempt! There is a small parking lot just west of I-55 off Meramec Bottom Road.
The cache is located just a short distance down the trail. It is your typical, micro medicine bottle. Bring your own pen or pencil. No room for anything, but very small items. Shouldn't be a difficult find. Enjoy.