Sumiken Mitsui Road Co., Ltd. engages in the provision of civil engineering and construction services. It operates through the following segments: Construction, Manufacture and Sales, and Others. The Construction segment offers paving, civil engineering, and construction works. The Manufacture and Sales segment provides construction materials. The Others segment includes power sales and real estate business. The company was founded on February 24, 1948 and is headquartered in Tokyo, Japan.