According to the latest information available, the boat ramp named US 93 North Challis in Idaho is a concrete boat ramp that is approximately 20 feet wide. It services the Salmon River, which is a popular destination for fishing, boating, and other recreational activities. The ramp is suitable for small to medium-sized boats, including kayaks, canoes, rafts, and motorized boats. However, it is not recommended for larger boats or those with deep drafts. In addition, users should be aware of the current river conditions and check for any restrictions or advisories before launching.