The Construction Division, on behalf of Project Dantak, invites eligible bidders to submit proposals for Consultancy Services for the Feasibility Study and Preparation of a Detailed Project Report (DPR) for the design and construction of approximately 1.8 km of unidirectional twin tunnels at Ganglakha–Gedu along the Phuentsholing–Thimphu Highway, including civil, electrical, and mechanical works, as well as approach roads, in accordance with NHDL specifications, under Project Dantak in Bhutan.