Kurobe river is known as rampage river which flows fast in the steep and narrow slope.
Since the establishment of Otaka , our main works like flood protection project to protect the lives and property of people in the basin suffering from flood damage and for the power supply development by overcoming the harsh natural environment.
The thoughts of predecessors who challenged these are still taken over by us.
The development of social infrastructure has progressed and “ safety,security and comfort” has become common today. In other to protect the present status we are and we will play a big responsibility with our high technology both today and in the future. That’s OTAKA’S Pride

  1. R1-4 Kurobe Dani No.2 Landslide Prevention Dam Construction
  2. Kurobe River Road Evacuation Construction
  3. R1 Toyama Internal Road Attached Facility Maintenance Construction
  4. (日本語) 黒部川第三発電所水平歩道補修工事(H31)第四発電所旧日電歩道補修工事(H31)
  5. H30 Kuronagi No.4 Landslide Prevention Improvement & Other Construction
  6. H30 Internal Landslide Prevention of Material Transportation Road
  7. Ooshima Block Production Construction
  8. Regional Road Asahi Unazuki Bridge Repairment & Maintenance Construction
  9. Subsidiary at Myanmar
  10. 林野庁補助事業「地域内エコシステム」構築事業
  11. Natural Environment Maintenance, Keyakidaira Area Maintenance Work
  12. H30 Toyama Kurobe Internal Bridge Repairment Construction
  13. Emergency Slope Protection at Akebi, Ravine Construction
  14. Kurobe River Block Production & Other
  15. Unazuki Fire Station Government Building Maintenance Construction (Main Building)
  16. Birudann (1) Slope Protection (Steep Slope) Erosion Control, Construction
  17. 2016,Kokurobe Dani Landslide Prevention Dam and other Construction
  18. (日本語) 地下水・温泉熱併用ヒートポンプ空調【ジオパーク展示室】
  19. Accumulation of Driftwood and other work at Unazuki Dam, 2019
  20. Birudani Regional Erosion Control( Steep Slope) Construction
  21. Maintenance and Repairment of Unazuki Bridge
  22. Construction of Shinetsu Headquarter Building (New Construction)
  23. Water Heat Source Heat Pump Air Conditioner Using Self- Blowing Well (Ground Water)[Ikuji, Kurobe City]
  24. Yosiwara River Bank Improvement ( No.143) Block Production Construction
  25. Kusurido ,Otozawa Area Embankment Reinforcement Construction
  26. Kuronagi Dani No.2 Downstream Landslide Prevention Dam Construction
  27. Kokurobe Dani No.2 Landslide Prevention Dam Construction
  28. Ground Water Thermal Heap Pump Air Conditioning(detached house in Toyama)
  29. Kurobe City Onsen Multipurpose Building (New Construction)
  30. Heat Pump Air Conditioning System Utilizing Groundwater’s Heat[ Otaka Construction Co.,Ltd]
  31. Kurobe City Government Administration Building ( New Construction)
  32. Urayama Interaction Center ( New Construction)
  33. Kurobe Dani Material Transportation Road Construction
  34. Kamiiino Embankment Construction
  35. Katakai River Embankment Construction
  36. Public Square , Regional Railway Unazuki Onsen Station
  37. Non Sprinkling Snow Melting System , Utilizing Unused Hot Spring
  38. Kurobe River Landslide Prevention Dam Reconstruction
  39. Rinndou Betumata Soga Takesen Slope Protection Construction
  40. Yosiwara Detached Breakwater Block Production Construction
  41. Aimoto Tokodone Waterways Repairment
  42. Interaction Plaza ( Main Building)
  43. Ogyu Embankment Reinforcement Construction
  44. Kuronagi River Erosion Control Dam Reconstruction work
  45. Rinndou Betumata Soga Takesen Slope Construction( Part 3 and Part 4)
  46. Matuodani (Material Transportation Road) Restoration Afforestation Construction
  47. Community Development Business Utilizing Renewable Energy