In 1855 a wooden beacon light was built near the main lighthouse. It was damaged or destroyed during the American Civil War and replaced in 1868. That structure fell into disrepair and was replaced with the current iron structure in 1877. It was used until 1899, after which it was dismantled. It was reassembled and used by the U.S. [Coast Guard] in World War II to look for submarines. It was restored in 1997 by the Georgia Department of [Natural Resources], which manages most of Sapelo Island. It is thought to be the oldest surviving iron structure in Georgia.