In 1989, this section of the railway was switched to a new line passing through the double-track line (and the accompanying tunnel) between Saga (present Saga Arashiyama) and Umahori Station.
この区間では1989年の嵯峨（現・嵯峨嵐山）～馬堀駅間の複線とそれに伴うトンネル経由の新線への切り替えられた。