Sumiken Mitsui Road Co.,Ltd. primarily engages in the construction business in Japan. The company is involved in the design, construction, and supervision of pavements and roads, airports, harbors, and living and community facilities, as well as landscaping, civil engineering works, and electricity and plumbing works. It also manufactures, sells, and leases construction machinery; and offers consulting services, security guard consignment, and buildings and facilities maintenance and management services. In addition, the company engages in the collection, transportation, and treatment of general and industrial waste; manufacture and sale of asphalt mixture, aggregates, and other civil engineering and construction materials; and acquisition, management, use, disposal, leasing, brokering, and sale of real estate properties. Further, it is involved in the soil and groundwater contamination, restoration, and purification activities; and generation, supply, and sale of solar power. The company was incorporated in 1948 and is headquartered in Tokyo, Japan. Sumiken Mitsui Road Co.,Ltd. operates as a subsidiary of Sumitomo Mitsui Construction Co. Ltd.