She also opened the construction work on 16.5-km elevated expressway from Lalkhan Bazar-Shah Amanat Airport in the city from the same venue.

The tunnel is being built at a cost of Tk 9,880 crore to turn Chattogram into ‘One City Two Towns’.

The total length of the proposed tunnel will be around 9.092 kilometres, including 3.50 kilometres of tunnel under the Karnaphuli River with an approach road of 4.89 kilometres alongside 740 metres of bridges linking the main port city and western side of the Karnaphuli along with the heavy industry-prone eastern side of the river.

It will cut the road distance between Chattogram and Cox’s Bazar, apart from easing the traffic on Dhaka-Chittagong Highway entering the port city to go to other parts of Chattogram division.

The multilane tunnel will connect Chattogram Port and Anowara Upazila and is expected to make communication between Chattogram and Cox’s Bazar easier in addition to  reducing traffic congestions on two bridges over the Karnaphuli River.

Chinese firm China Communication Construction Company Ltd (CCCC) has been appointed as a consultant for the construction of the tunnel.

Prime Minister Sheikh Hasina and Chinese President Xi Jinping jointly laid its foundation stone on October 14 in 2017.

The construction work on the proposed Elevated Expressway will cost Tk 3,250 crore.

Chattogram Development Authority will implement the four-lane flyover in four years from Lalkhan Bazar to Shah Amanat Airport in the port city.

Max Benkin JB has been appointed as a contractor for the construction of the elevated expressway.