The Bach Dang Bridge forms part of the Ha Long - Hai Phong highway and will help cut 50km from the journey between Hanoi and the Ha Long Bay UNESCO world heritage site.

There will be two main spans of 250m in the focal cable-stayed section. The tallest of the three towers will reach a height of almost 100m.

The bridge, which is in Quang Ninh province, has been designed to withstand withstand earthquakes of magnitude 8.

The US$352 million project is due for completion by the end of 2016 and will be constructed on a build-operate-transfer basis.