According to the latest information available, the boat ramp named Salmon River Road Lemhi County in Idaho is a concrete boat ramp. It is approximately 20 feet wide and provides access to the Salmon River. The ramp is suitable for small to mid-sized boats, including rafts, kayaks, canoes, and powerboats. However, there are no specific restrictions mentioned regarding the type of craft permitted on the water. Overall, the boat ramp is well-maintained and provides convenient access to the Salmon River for recreational water activities.