Thereafter, the 'Higashiyama Bypass' linking the south of Otani Mausoleum to Sanjo-dori Street just before Osakayama via Yamashina was constructed, and the National Route 1 was changed from Sanjo-dori Street where Keishin Line ran to Gojo-dori Street; this caused severe chronic congestion to occur at the Gojo Grade crossing during the morning and evening rush hours.
その後、昭和40年代に大谷本廟の南側から山科を経由して逢坂山の手前で三条通りへと繋がる「東山バイパス」が造られ国道1号線が京津線の走る三条通りから五条通りに代わり、朝夕のラッシュ時の五条踏み切りで慢性的に大渋滞が発生。