What is the Bangabandhu Tunnel under the Karnaphuli River?
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The Bangabandhu Sheikh Mujibur Rahman Tunnel is an underwater expressway tunnel under the Karnaphuli River in Chattogram. It is the first underwater road tunnel in South Asia. The tunnel connects the east and west sides of Chattogram city, reducing travel time and easing port-related traffic. It features two tubes with multiple lanes each, ventilation systems, and emergency exits. The project was built with Chinese technical assistance and funding, and is a major milestone in Bangladesh infrastructure development.