 In 1956, a private track was laid directly from Chōshi Station to the nearby Yamasa soy sauce factory, which virtually eliminated freight operations handled by the Chōshi Electric Railway.In 1963, a decision was made to close the line, but this decision was overturned following opposition from the local communities and funding from Chōshi City.To the present day, the line is largely subsidized by Chiba Prefecture and Chōshi City.