The road was built based on upgrading provincial roads No.641, 642, 643, 645, 646 and 649 at a total cost of over VND609 billion.
The route is 115 km long and 5.5 km wide running through 15 communes in three mountainous districts of Dong Xuan, Son Hoa and Song Hinh.
The road will facilitate transportation and boost socio-economic development of Phu Yen and neighbouring provinces, meeting the expectations of thousands of local households.
