After the Great Fire of Meireki, Ryogoku-bashi Bridge was constructed across Sumida-gawa River and the construction of waterways for Kake-gawa River (in Tokyo) and Oyoko-gawa River was in progress and urban area was expanded to the west side of Sumida-gawa River where was not included in Edo before.
明暦の大火後、隅田川に両国橋が架けられて竪川(東京都)・大横川などの溝渠の構築が進行する等、従来江戸の範疇に含まれていなかった隅田川の東側にも市街地が拡大するようになった。