When the conquest of Choshu clan was almost finished in 1866, an event often happened such that a temporary notice board held up by the Tokugawa shogunate at Sanjo-ohashi bridge was pulled out and thrown into the river.
慶応2年の長州征伐が一段落した際、徳川幕府が三条大橋に掲げた高札が抜き取られて川に投げ捨てられると言う事態がたびたび起こった。