Based on available information, the Southside Road boat ramp in Missoula County, Montana is a concrete boat ramp that is approximately 20 feet wide, and provides direct access to the Clark Fork River. The ramp is located at latitude 46.9909668 and longitude -114.44589996.

According to the Montana Fish, Wildlife, and Parks website, the Clark Fork River is open to a variety of watercraft, including motorized boats, canoes, kayaks, and rafts. However, certain regulations and restrictions may apply, depending on the location and time of year.

It is always important to check with local authorities or the Montana Fish, Wildlife, and Parks website for the latest information on boating regulations and restrictions before launching any watercraft.