"We're looking at what we're going to do about preventing this from occurring again," Wriston told the newspaper.
Donna Hayes, who lives near the site of the rockslide, said she heard a boom on Friday while watching television.
"I had family and friends that had just driven underneath [the rock] before the fall," Hayes told the newspaper. "It's very scary."
She said she and her sister-in-law had raised concerns to the DOH after a previous slide.
"We told them two years ago to fix that [rock], and they didn't," Hayes told the newspaper.
Johnny Boggess, of Naoma, said Friday's rockslide is the worst he has seen on the road.
"I've watched those rocks for years and wondered what kept them up there," Boggess said. "Especially that one. That was a monster. I wasn't surprised at all it came down."