We came up from Fl yesterday back to our home in Holden Beach NC, 30 miles North of Myrtle Beach. We came down 378 off 95 towards MB. Used the Waze app. We had no problems at all. When we got to Conway it took us on 90 towards NMB. I noticed a line going 15-501 in Conway but I think still passable. Worst case you could take the route we took to NMB then go south on 31 bypass.
I have heard of several folks from our area coming in from Columbia with no problems.
378 was an easy drive no water, not dangerous at all.
We were towing a 28 foot TT. Traffic not bad either.
PS: stay out of SE NC. rivers still rising till maybe tomorrow or so