According to the latest available information, the boat ramp named Bill Johnson Road 2378 is a concrete boat ramp located in Hilliard, Florida. It has a width of approximately 20 feet and can accommodate small to medium-sized boats.

The boat ramp services the nearby St. Marys River, which is a popular destination for fishing and boating enthusiasts. The St. Marys River flows through Georgia and Florida, and it eventually empties into the Atlantic Ocean.

Various types of watercraft are permitted on the St. Marys River, including motorized boats, kayaks, canoes, and stand-up paddleboards. However, users are advised to check with local authorities regarding any restrictions or regulations that may be in place.

In conclusion, the Bill Johnson Road 2378 boat ramp is a concrete ramp in Hilliard, Florida, that services the St. Marys River. It is approximately 20 feet wide and can accommodate small to medium-sized boats. A variety of watercraft are allowed on the river, subject to any applicable restrictions or regulations.