NHIDCL to construct 4-lane twin tube road and rail tunnel under Brahmaputra in Assam
NHIDCL is inviting applications from eligible contractors to construct a 4-lane twin tube road and rail underwater tunnel under the River Brahmaputra in Assam, including 4-lane approaches and railway infrastructure, on an EPC (Engineering, Procurement, and Construction) mode.
The document states that applications are invited from 'eligible contractors' but does not specify the detailed eligibility criteria such as minimum turnover, years of experience, or required certifications in this text.
- Estimated Project Cost: Rs. 11,982.36 (Exclusive of GST)
- Completion Period: 5 Years
- Maintenance Period: 15 Years
- Tender Type: RFQ (Request for Qualification)
- Application Submission Deadline: 30.09.2026 (upto 18.00 Hrs. IST)
- Application Opening Date: 01.10.2026 (at 18.00 hours IST)
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Document details
| Official title | Construction of 4 Lane Twin Tube Road cum Rail Underwater Tunnel under River Brahmaputra, including 4 Lane approaches along with provision of Railway infrastructure in one of the tubes, in the state of Assam on EPC Mode |
| Source body | National Highways & Infrastructure Development Corporation (NHIDCL) |
| Reference number | 2026_NHIDC_924253_1 |
| Status | active (current) |
| Year | 2026 |
| Closing date | 30-09-2026 18:00:00 |
| Documents | 1 |