The expressway linking Bogotá and Girardot is one of the busiest in Colombia, with 15.3 million vehicles in 2015. Built some 50 years ago, it has been under concession since 2005. More than 37% of its revenue comes from heavy goods vehicle traffic (the motorway links Bogotá to the main route serving the Pacific ports). In its current state, the project consists of two interchanges, a 4.2 km tunnel, 17 bridges, 34 footbridges, 4 viaducts and 2 operation centres. The new project aims to improve and increase traffic on this motorway. This PPP contract is financed on the basis of toll revenues, which have been installed since 2005.