The construction of a tunnel through the Ca Pass on National Highway 1A between central Phu Yen and Khanh Hoa provinces started on December 28.

The project is 13.4 km long, including the 4km tunnel. It is scheduled to be completed in late 2016 and put into service in the beginning of 2017, helping shorten 8 kilometres in distance between the two provinces.

It is built by the Lung Lo Construction Corporation under the Defence Ministry with an investment of 15.6 trillion VND (742.9 million USD). The project was designed by Japanese consulting firm Nippon Koei.-VNA