Dong Nai's investment and construction project management board signed off in late May on the construction design for Road 770B, a route to be built from scratch at a cost of about VND4.6 trillion (US$175 million).
The road is one piece of a far larger effort to make sure travelers and freight can quickly reach Long Thanh International Airport, which is due to open to commercial traffic this year after a technical opening in December 2025. Built on a greenfield site about 40 km east of Ho Chi Minh City, the airport is designed to handle 25 million passengers a year in its first phase and is intended to relieve the chronically overcrowded Tan Son Nhat airport in the city center.
Vietnam's state-owned airports operator Airports Corporation of Vietnam, the airport's investor, plans to route the bulk of the country's international flights through Long Thanh once it is running. For travelers bound for southern Vietnam, that eventually means a longer drive from a new airport rather than the short hop into central Ho Chi Minh City that Tan Son Nhat offers today.
Ground access has been the open question hanging over that timeline. Beyond expressways funded by the central government, Dong Nai is building a web of its own connector roads, including routes 25B and 25C and expansions of roads 769 and 773, at a combined cost running into the tens of trillions of dong. Road 770B is the latest to clear the design stage.
