The first six-lane flyover on the Dhaka-Chittagong highway at Mohipal, Feni will become operational on January 4.
Prime Minister Sheikh Hasina would inaugurate the flyover via video conference on that day, said Road Transport and Bridges Minister Obaidul Quader.
The minister came up with the information while talking to reporters after an inspection of the flyover on Monday noon.
The 660-meter flyover has been constructed at a cost of Tk157.99 crore, to ease traffic congestion on the Dhaka-Chittagong Highway and help reduce the suffering of commuters in adjoining areas.
Mohipal stands at a major intersection on the Dhaka-Chittagong highway, connecting Dhaka on the north, Chittagong on the south, Feni on the east and Noakhali, Laksmipur and Chandpur on the west.
Abdul Monem Limited, under the 19th Engineer Construction of Bangladesh Army, executed the construction works.
The main structure of the flyover will be 370 meters long, with two 145m ramps for movement of regional motor vehicles.