Trans-Chaco Highway is one of the most famous roads in South America. After decades of notoriety as one of the worst roads, it was paved in 2007.
The road, also knonwon as Ruta Nacional 9 or Ruta Nacional Número 9 "Dr. Carlos Antonio López" is 771 km long. It links Asunción with the Paraguay/Bolivia border in the Chaco. The road crosses the departments of Central, Presidente Hayes, and Boquerón and was inaugurated in 1961. For decades, roughly before 2009, this was known as South America's worst road. Cars and buses could get stuck for days on end, especially in the mud during the rainy season. In 2007 the road was completely paved. However, the asphalt layer was so thin that within a year cracks and deep potholes are visible again. The road is almost straight, but there are never ending potholes. Don’t drive on the highway at night if you’ve never driven on it before. Climatic conditions are harsh, there is little traffic and almost no population on route, hence no assistance case of a breakdown. Motorists and even bus travellers should carry extra food and especially water.
Pic: By Cmasi [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], from Wikimedia Commons