Here is some helpful information to help you find what you need:
Phone:
855-GO-SCDOT (855-467-2368) toll free or
803-737-1200
803-737-1200
Office Hours:
Monday through Friday, 8:30 AM - 5:00 PM
Mail:
South Carolina Department of Transportation
Attn: Customer Service Center
955 Park Street
P.O. Box 191
Columbia, SC 29201-3959
Attn: Customer Service Center
955 Park Street
P.O. Box 191
Columbia, SC 29201-3959