Interior Drainage Flood Control_03

The details of South URAWA Relief Sewer Second are in the following pictures1)2).


It is necessary to avoid other utility lines while not causing damage to structures such as bridge foundations in the downtown.
This leads the relief sewers to be placed deeper and deeper and the costs higher and higher.

1) http://www.city.saitama.jp/www/contents/1189057832553/files/minamiku1.pdf
2) Construction Works of South URAWA Relief Sewer Second, Brochure, Saitama City & Kajima Corporation