Construction standard of Shengshan Avenue in Sandu County

Urban main roads. Sandu County belongs to Qiannan Buyi and Miao Autonomous Prefecture of Guizhou Province, which is located in the southeast of Qiannan Buyi and Miao Autonomous Prefecture. The design standard of Shengshan Avenue in Sandu County is the urban main road, which is about 5073.74 meters long and 48 meters wide, with six lanes in both directions. Urban trunk road refers to the road connecting the main parts of the city. It is the backbone of urban road network, with traffic function as the main function, and undertakes the main passenger and freight tasks of the city.