December 28, 1966: The lines between Yamashina Station and (temporarily called) Kitaotsu Station (currently Otsukyo Station) and between Omi-Imazu Station and Omi-Shiotsu Station were primarily approved.
1966年（昭和41年）12月28日-山科～（仮称）北大津（現・大津京）間、近江今津～近江塩津間第一次認可。