The vehicle hit the cable barrier on the side of the highway, then crossed all lanes, went down an embankment and overturned on its side, authorities said.
Watson said 12 of the 14 people in the vehicle were injured. Ten were transported to Northeast Georgia Medical Center in Gainesville and two were taken to Athens Regional Medical Center. All but two were treated and released, according to Channel 2.
The interstate remained closed between exits 129 and 137 until 1:30 p.m.
Atlanta-based “Party on the Moon” has played events ranging from Eli Manning’s wedding to President Obama’s inauguration, according to its website.
“Thankful and grateful for all of your messages and prayers! We are all going to be ok. So sorry we won’t be able to give you a show this weekend but couldn’t be any more thankful,” band member Sandra Grimaldi wrote on Facebook.