This is because the shopping street is a remnant of the past Uonotana-dori Street, as included in songs used to memorize east-west streets by heart (refer to the article "Streets in Kyoto City"), and just like Nishikikoji-dori Street, the width of the old day's street lined with shops has been passed down.
これは、東西の通りを覚える歌（京都市内の通り参照）に歌われる魚の棚通の名残りであり、錦小路通と同様に往時の店が建ち並んだ道幅を継承しているからである。