Based on the latest information available, the boat ramp named Rattlesnake Road in Placer County, California is a concrete boat ramp that provides access to the North Fork American River. The ramp is approximately 20 feet wide and is suitable for launching small to medium-sized boats, including canoes, kayaks, and fishing boats.

According to the Placer County website, motorized boats are permitted on the North Fork American River, but only with engines that are 10 horsepower or less. Additionally, boaters are required to comply with all state and local regulations, including wearing proper safety gear and obtaining the necessary permits and licenses.

It is important to note that conditions at the Rattlesnake Road boat ramp can vary depending on factors such as weather, water levels, and maintenance schedules. Boaters are advised to check local reports and contact the Placer County Parks and Grounds Division for the latest information and updates.