The project, constructed by the consortium of Cienco 4 and Hanshin, has an estimated cost of nearly VND1.1 trillion (US$51.7 million) and is scheduled for completion in 18 months.
It is part of the second phase of Hanoi’s third ring road from Mai Dich to North Linh Dam.
Each side of the tunnel consists of three lanes and measures 10.5 metres wide and 692 metres long, including the approach road.
This is the second tunnel crossing Hanoi’s third ring road after the first one at the junction with Nguyen Trai road, which costs an estimated VND500 billion (US$23.5 million).
Deputy Minister of Transport Nguyen Hong Truong said the tunnel will help ease traffic congestion and strengthen connectivity between Hanoi’s centre and western area.
