Sanmenxia has an abundance of convenient transportation, with a national railway line artery running through it, national highway 310, the Zhengzhou-Xi'an Rapid Transit Railway line, the Lianyungang-Lanzhou Railway line, and the Lianyungang-Horgos expressway linking the coastal city of Lianyungang in eastern Jiangsu province to Horgos, a border port in the Xinjiang Uygur autonomous region.