The Johnsondale Bridge River Access Boating Site boat ramp is located at latitude 35.95833 and longitude -118.4875 in California. It is a concrete boat ramp that is open year-round and provides easy access to the Kern River. The boat ramp is approximately 20 feet wide, making it suitable for launching small to medium-sized boats.

The Kern River is a popular destination for anglers and boaters, and the Johnsondale Bridge River Access Boating Site provides easy access to this scenic waterway. The river is known for its trout fishing and is also a popular spot for kayaking, canoeing, and rafting.

According to the latest information available, the California Department of Fish and Wildlife allows all types of boats on the Kern River, including motorized and non-motorized vessels. However, the department does have restrictions in place for certain sections of the river, particularly during times of high water flows.

In summary, the Johnsondale Bridge River Access Boating Site boat ramp is a concrete ramp that provides easy access to the Kern River in California. It is suitable for launching small to medium-sized boats, and all types of watercraft are permitted on the river.