貴州江口至甕安高速公路全長143.272公里，其中橋梁97座，隧道23座，山高坡陡，峽谷深切，橋隧比43.43%。中交二公局參與投資，并負(fù)責(zé)全線路基橋涵和路面主體施工任務(wù)及機(jī)電安裝、房建等工程。
　　Guizhou Jiangkou-Weng'an Expressway is 143.272km long, including 97 bridges and 23 tunnels, with steep hills and deep canyons, and bridges and tunnels occupy 43.43%. CCCC Second Highway Engineering Co., Ltd. participated the investment and was responsible for construction tasks of subgrade, bridges, culverts and main pavement as well as mechanical and electrical installation and building construction of the whole line.