Sanmenxia also has a convenient road network. Two national highways, G310 (Lianyungang–Tianshui in Gansu province) from east to west and G209 (Hohhot, the capital of the Inner Mongolia autonomous region–Beihai in Guangxi Zhuang autonomous region) from north to south, run through the city. The Yellow River Highroad Bridge in Sanmenxia city connects Henan and Shanxi provinces.