The Seaboard Coast Line became the CSX Corporation in the 1980s. With the former Atlantic Coast Line main line (A Line) being used as the through route in the combined network, CSX abandoned the S Line between Riceboro, Georgia (just southwest of Savannah) and Bladen, Georgia in 1986 and redesignated the remaining track as the Kingsland Subdivision (a designation which remains on the CSX line south of Yulee). Track between Bladen and Seals was removed in 1990.
The Seaboard Coast Line transformed into the CSX Corporation in the 1980s. The former Atlantic Coast Line main line (A Line) served as the connecting route within the combined network, and CSX abandoned the S Line between Riceboro, Georgia (just southwest of Savannah) and Bladen, Georgia in 1986.  The remaining track was re-designated as the Kingsland Subdivision (a designation that persists on the CSX line south of Yulee). Track between Bladen and Seals was removed in 1990.