After conducting research, I could not find any reliable information about the boat ramp named Bureau of Water Supply Road 3 Town of Andes. It is possible that the information is not readily available or it may be a small, local boat ramp that is not well known. Without additional information, it is difficult to determine what kind of a boat ramp it is, how wide it is, what body of water it services, and what kind of craft are permitted on the water.