The Ministry of Construction has approved a plan to study the expansion of the Hanoi–Bac Giang Expressway from six lanes to eight to meet rising transport demand along this key corridor.
Two expansion options are under consideration. The first would widen the section from the National Highway 31 interchange to the end of the expressway, covering a total length of 45.2 km. The second involves expanding the stretch from the National Highway 31 interchange to the junction with the Hanoi–Thai Nguyen Expressway, with a total length of 39.5 km.
According to the national road network plan for the 2021–2030 period with a vision to 2050, approved by the Prime Minister, the Hanoi–Bac Giang–Lang Son Expressway has a total planned length of 153 km, designed with six lanes. The route comprises three sections: Hanoi–Bac Giang (46 km), Bac Giang–Lang Son (64 km), and Lang Son - Huu Nghi (43 km).
Currently, the Hanoi–Bac Giang section is operating beyond its designed capacity, leading to frequent congestion, heightened safety risks, and rising logistics costs. The expressway has been in operation since 2016.
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