CSX sold the line to Duval Transportation and service began on March 28, 1987. Duval was renamed Mid-Atlantic Railroad on November 4 of that year. The company is owned by Ken Pippin. The Wacamaw Coast Line branch extends from Conway, South Carolina to Myrtle Beach, 14.1 miles. Rail is 85 pound.
Traffic includes stone, coal, lumber and brick.
The line is former Atlantic Coast Line trackage which was acquired from CSX by Horry County and leased to Horry County Railroad in November, 1984. The operating company is controlled by the Carolina Southern and locomotives of the two companies are pooled together.