While I am heartened to see the information passed around about the Tubman raid it is unfortunate that the DOT wasn't the ones who uncovered this information. They are just taking credit! The DOT was informed of the site when they announced the bridge replacement. In fact as late as October, 10 days before the newspaper article some in the DOT were denying where exactly the raid took place. In addition the DOT has minimised the importance of the causeway where the raid took place. The causeway is approximately one mile long and bisects historic rice fields hand cleared from cypress swamps by slave labor in the early 1700's. The ferry site was established in 1715.
This area also was the scene of a number of skirmishes in the Yamassee Indian war, Revolutionary War, and Civil War.
If anyone is interested in additional information about the site I would be glad to assist.
One note, in the Memorandium of Agreement between the State Historic Preservation Office and the SCDOT there will be an on site "informational display". This will include the story of the Tubman raid.