You are looking for a camo-covered pill bottle. Parking is available across the river in the city park parking lot. Please be careful when retrieving this geocache, as the rocks can be tough to climb around.
The Janesville Pedestrian Bridge was opened in the Summer of 2014, to make it easier to cross the river from the nearby housing addition. Finding this cache gives you an opportunity to walk across the new bridge and stare over the cedar river. Happy caching! Note: Coordinates are much more accurate while on top of the bridge.