"There are many roads where water levels will continue to rise making the roads impassable during the next 72 hours or more depending on when the local rivers crest", NCDOT said, adding that travel was not recommended in several counties, including Cumberland, Duplin and Harnett.
Water from the flooded Waccamaw River surrounds a house in Conway, S.C., earlier this week.
A section of Interstate 95 in SC has been closed because of flooding.
Preliminary estimates say the storm did $22 billion in damage across the region, which would put Florence among the top 10 costliest storms in USA history.
Duke spokeswoman Paige Sheehan said Thursday that the dam containing Sutton Lake appears stable and they are monitoring the situation with helicopters and drones to react to what was called "an evolving situation".
Michele Nix, from Kinston, serves as the vice chairman of the North Carolina Republican Party.
McMaster said Friday he hopes United Health Care's generosity inspires other companies across the state to donate to the One SC Fund to help the recovery from Hurricane Florence's floods.
Officials in Florence County, South Carolina, are ordering almost 2,000 more people to leave their homes and get out of the way of the rising Lynches River.
"We've never had it at those levels before, so we don't really know what the impact will be just yet", he said.
Officials have ordered evacuations along the Lynches River in eastern SC because of flooding from Hurricane Florence.
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Two years ago, flooding ruined the baseboards and carpet.
This year, water from the Little River water broke the windows, leaving the pews a jumbled mess.
In Conway, South Carolina some residents were heading home Wednesday but only to collect their belongings and evacuate again after officials say more flooding could be on the way. "My gut is turning up", church member Dennis DeLong said.
"We've got a long road ahead.to make sure we build back to where we need to be", Cooper continued.
Gov. McMaster estimated damage from the flood in his state at $1.2 billion in a letter that says the flooding will be the worst disaster in the state's modern history.
Smita Depani, center, stands in the apartment she lived in while surveying the damage with her brother-in-law Jayanti Depani, left, and sister-in-law Puspa Manvar in the motel they own which was destroyed in the flooding from Hurricane Florence in Spring Lake, N.C., Wednesday, Sept. 19, 2018.
In Bladen County, North Carolina, around 100 people and 33 animals were rescued "in a unsafe operation in the middle of the night" after a dam burst, Governor Roy Cooper said in a twitter post on Friday. One was off the coast of the Carolinas with a chance of drifting toward land. The utility said it could not rule out the possibility that coal ash from a dump adjacent to the plant, which formerly burned coal, might be flowing into the nearby Cape Fear River.
The risk of environmental damage from Florence mounted, too, as human and animal waste was washed into the floodwaters. More than half the dead were found in vehicles. They also warned people to not get caught off guard as rivers that briefly receded were periodically rising back.
The Waccamaw River has started its slow rise in the city of 23,000, and forecasters expect it to swell more than 3 feet (0.90 meters) above the previous record crest by Tuesday while still rising.
He warned South Carolinians to not drive over roads covered with water.