It forms part of the urban highway network of Santiago, all of which incorporate a free flow toll system.
Within the network the Autopista Central forms the primary north–south connection through the centre of the city, the northern terminus is at the interchange with Vespucio Norte Express, where it continues northward as Autopista del Aconcagua.
Autopista Central really consists of two highways: The main section runs the full length of the route, and the second, called "Eje General Velásquez", runs further to the west, bypassing the downtown districts.
Previously, many city blocks of downtown Santiago were cleared of buildings.
Part of the removed earth was used to create an embankment on the south bank of the Mapocho River, which was planned to carry the tracks of a new railroad running to the Estación Mapocho,[4] but the project was never executed.