Stretching 3.315 kilometres beneath the Karnaphuli River, the Bangabandhu Sheikh Mujibur Rahman Tunnel is supposed to become the economic lifeline of Chattogram city. Linking crucial hubs such as Chattogram port, Anwara Industrial Zone, Matarbari Deep Sea Port, Cox's Bazar, Dhaka, and Chattogram Airport, the tunnel is one of Bangladesh's largest mega infrastructure investments