Traffic is now flowing back at a normal pace now that all lanes have been reported open on Southbound I-77 at the state line.
Around 1 pm today SC Highway Patrol went to twitter saying the Exit 90 for Carowinds Blvd/US 21 overhead state sign had collapsed onto the highway around 1 pm.
It is not known at this time what caused the sign to fall. Highway patrol says all lanes were back open by 2:10 pm.
