Regular maintenance of the Costa Rica Highway Route 1, section Barranca - Peñas Blancas, and other nearby national routes

Highway Route 1 is the main arterial road of the National Road Network, connecting the northern border of Costa Rica (Peñas Blancas) with the centre of the country. It forms part of the Inter-American Highway, the Central American section of the Pan-American Highway. This highway can sustain high traffic volumes in Costa Rica. It is also a strategic route for the country's main economic activities (commerce and tourism). Proposals included the refurbishment of the La Cruz-Peñas Blancas section of Highway Route 1, and the regular maintenance of the Barranca-Puntarenas (Route 17), Liberia-Guardia (Route 21) sections, as well as the main towns located along Route 1.

A recycling technique was used to build a base stabilised with cement, and a layer of paving with corrective hot asphalt mix was added.

This was the largest hot-in-place asphalt pavement recycling project worldwide.

Client: National Roads Council

Start date: 2002

End date: 2004