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. (日本語) 海外事業 フロンティア事業部
  2. (日本語) 令和2年度黒部川河道整備他工事
  3. (日本語) H30-32黒薙川第2号下流砂防堰堤工事H30-32黒薙川第2号下流砂防堰堤工事
  4. (日本語) 市道立野6号線外1路線道路改良工事市道立野6号線外1路線道路改良工事
  5. (日本語) 朝日小川ダム河川総合交付金法面補修工事朝日小川ダム河川総合交付金法面補修工事
  6. (日本語) 一般県道音沢中ノ口線 県単独橋梁維持修繕 境谷橋 伸縮装置取替工事
  7. R1-4 Kurobe Dani No.2 Landslide Prevention Dam Construction
  8. Kurobe River Road Evacuation Construction
  9. R1 Toyama Internal Road Attached Facility Maintenance Construction
  10. (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)
  11. H30 Kuronagi No.4 Landslide Prevention Improvement & Other Construction
  12. H30 Internal Landslide Prevention of Material Transportation Road
  13. Ooshima Block Production Construction
  14. Regional Road Asahi Unazuki Bridge Repairment & Maintenance Construction
  15. Subsidiary at Myanmar
  16. 林野庁補助事業「地域内エコシステム」構築事業
  17. Natural Environment Maintenance, Keyakidaira Area Maintenance Work
  18. H30 Toyama Kurobe Internal Bridge Repairment Construction
  19. Emergency Slope Protection at Akebi, Ravine Construction
  20. Kurobe River Block Production & Other
  21. Unazuki Fire Station Government Building Maintenance Construction (Main Building)
  22. Birudann (1) Slope Protection (Steep Slope) Erosion Control, Construction
  23. 2016,Kokurobe Dani Landslide Prevention Dam and other Construction
  24. (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】
  25. Accumulation of Driftwood and other work at Unazuki Dam, 2019
  26. Birudani Regional Erosion Control( Steep Slope) Construction
  27. Maintenance and Repairment of Unazuki Bridge
  28. Construction of Shinetsu Headquarter Building (New Construction)
  29. Water Heat Source Heat Pump Air Conditioner Using Self- Blowing Well (Ground Water)[Ikuji, Kurobe City]
  30. Yosiwara River Bank Improvement ( No.143) Block Production Construction
  31. Kusurido ,Otozawa Area Embankment Reinforcement Construction
  32. Kuronagi Dani No.2 Downstream Landslide Prevention Dam Construction
  33. Kokurobe Dani No.2 Landslide Prevention Dam Construction
  34. Ground Water Thermal Heap Pump Air Conditioning(detached house in Toyama)
  35. Kurobe City Onsen Multipurpose Building (New Construction)
  36. Heat Pump Air Conditioning System Utilizing Groundwater’s Heat[ Otaka Construction Co.,Ltd]
  37. Kurobe City Government Administration Building ( New Construction)
  38. Kurobe Dani Material Transportation Road Construction
  39. Kamiiino Embankment Construction
  40. Katakai River Embankment Construction
  41. Public Square , Regional Railway Unazuki Onsen Station
  42. Non Sprinkling Snow Melting System , Utilizing Unused Hot Spring
  43. Kurobe River Landslide Prevention Dam Reconstruction
  44. Rinndou Betumata Soga Takesen Slope Protection Construction
  45. Yosiwara Detached Breakwater Block Production Construction
  46. Aimoto Tokodone Waterways Repairment
  47. Interaction Plaza ( Main Building)
  48. Ogyu Embankment Reinforcement Construction
  49. Kuronagi River Erosion Control Dam Reconstruction work
  50. Rinndou Betumata Soga Takesen Slope Construction( Part 3 and Part 4)
  51. Matuodani (Material Transportation Road) Restoration Afforestation Construction
  52. Community Development Business Utilizing Renewable Energy