By incorporating the Utago - Shomyoichi - Agawa section and Shomyoichi - Senzaki section of the Mine Line as well as the whole of the Kogushi Line, the Kyoto - Hatabu section and Shomyoichi - Senzaki section became the Sanin Main Line.
美禰線宇田郷～正明市～阿川間、正明市～仙崎間と小串線全線を編入し京都～幡生間、正明市～仙崎間が山陰本線となる。