You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Plantation grounds near headwater of Two Bridge Swamp, SW side of SC 46 about 2.5 air mi SSE of I-95 jct with SC 46, SE of Hardeeville. Remove constraint Place: Plantation grounds near headwater of Two Bridge Swamp, SW side of SC 46 about 2.5 air mi SSE of I-95 jct with SC 46, SE of Hardeeville.