Question: How many Georgia barrier islands have direct road access from the mainland?
Answer: Three. There are three Georgia barrier islands with direct road access from the mainland via bridges or causeways and they are the developed islands of Tybee Island, St. Simons Island, and Jekyll Island. A fourth island, Sea Island, is still accessible by car, but one must cross over St. Simons Island in order to reach it. The remaining barrier islands in Georgia are largely undeveloped and typically require boat transportation.