R8 Shin-Sasago Tunnel Revision Design Business
About This Opportunity
Japan contract award (governance & public sector): Ｒ８新笹子トンネル修正設計業務. By 国土交通省関東地方整備局 / 甲府河川国道事務所. Awarded to 大日本ダイヤコンサルタント株式会社 (JPY 17.5M, Apr 2026).
This is a consulting contract in the governance and public administration sector. Located in Japan, Asia, this opportunity is open to firms and consortiums, with an estimated budget of JPY 21.8 million.
Published through i-ppi (Japan Tender Information Service), a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for consulting in the governance and public administration sector. Consulting assignments are typically evaluated with a strong emphasis on the technical proposal, including the methodology and qualifications of key experts. Shortlisted firms may be invited to submit financial proposals in a second stage. This contract has already been awarded. The information is published for transparency and market intelligence purposes.
Description
Auto-translated from JapaneseR8 Shin-Sasago Tunnel Revision Design Business
Procuring Agency: Ministry of Land, Infrastructure, Transport and Tourism, Kanto Regional Development Bureau
Department/Office in Charge: Kofu River and National Highway Office
Bidding and Contract Method: Simplified Public Tender Method
Announcement Date/Time: February 27, 2026 00:00
Deadline Date/Time: March 9, 2026 15:00
Opening Date/Time: April 30, 2026 11:08
Estimated Price: 21,770,000 (excluding tax)
Successful Bidder: Dai Nippon Diamond Consultant Co., Ltd.
Winning Bid Price: 17,480,000 (excluding tax)
Data provenance
This notice is sourced from i-ppi (Japan Tender Information Service) and was originally published on February 27, 2026. Last refreshed 30 days ago. Original language: Japanese. BidsFactory mirrors official procurement notices and links back to the source for full legal text.
About 国土交通省関東地方整備局 / 甲府河川国道事務所
国土交通省関東地方整備局 / 甲府河川国道事務所 has issued 23 procurement notices on BidsFactory, including 1 currently open and 11 awarded contracts. Activity concentrates in Construction & Civil Works, Transport & Logistics, and Governance & Public Administration. All notices are published for Japan. Notices are distributed via i-ppi (Japan Tender Information Service). Most recent publication: June 12, 2026.
Frequently asked questions about this tender
How can I submit a bid?
Visit i-ppi (Japan Tender Information Service) to access the full notice, required documents, and submission instructions provided by the contracting authority.
Is this tender still open?
No — the contract has already been awarded to 大日本ダイヤコンサルタント株式会社. The award notice is archived on BidsFactory for transparency and market intelligence.
Who is the contracting authority?
This notice was issued by 国土交通省関東地方整備局 / 甲府河川国道事務所 in Japan. The authority is responsible for evaluating bids, awarding the contract, and managing performance.
What type of contract is this?
This is a Consulting contract in the Governance & Public Administration sector. The classification helps bidders match the opportunity to their qualifications and registered scope of supply.
How much was the contract awarded for?
大日本ダイヤコンサルタント株式会社 was awarded the contract for ¥17,480,000. The figure reflects the value disclosed by the contracting authority in the award notice.
Where will the contract be performed?
The contract is for delivery in Japan. Foreign bidders should review local registration, taxation, and any in-country presence requirements before submitting.
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