Therefore , many of their branch lines were sold off as short line railroads in the ' 80s and ' 90s .
CSX , being an extremely large rail system , could not operate branch lines efficiently and provide the personalized service that customers required .
Many of customers ' branch lines were sold off as short line railroads in the ' 80s and ' 90s .
CSX , being an extremely large rail system , could not operate branch lines efficiently and provide the personalized service that customers required .