Bogue Sound is a medium-sized geographic sound in the state of North Carolina. It separates the Bogue Banks (consisting of localities such as Indian Beach, Atlantic Beach, and Emerald Isle) from mainland Carteret County. Morehead City's port is accessed via the Bogue Sound. Two bridges cross the sound: NC 58 on the B. Cameron Langston Bridge and the Atlantic Beach Causeway from Morehead City to Atlantic Beach. The entire sound forms a portion of the Atlantic Intracoastal Waterway. A few small islands in the sound were used for test bombing by airplanes around the time of World War II, and signs at certain points in Bogue Sound warn people of unexploded ordnance.