Thailand's Department of Highways noted that construction of the new Highway 3646 linking Thailand and Cambodia is already 70% complete. Full completion is expected by next February. Highway 3646 will connect Ban Nong Ian in Sa Kaeo, Aranyaprathet, Thailand, to Banteay Meanchey, Cambodia, via the Thailand-Cambodia Friendship Bridge.

The highway costs around 2 billion baht ($63.72 million). It will be a four-lane highway spanning 25km. It will link Highway 33 and Highway 3366. It is set to ease traffic at the Ban Khlong Luek checkpoint, and facilitate logistics and tourism between Cambodia and Thailand.

Through the Rural Roads Improvement Project II, ADB is helping Cambodia rehabilitate about 1,000 kilometers of rural roads in nine provinces, including Banteay Meanchey. Improvement will also include road maintenance, establishing a community-based road safety program, and climate change adaption measures.