In 2006, the company PERI S.A.U asked to manufacture voussoir formwork and self-climbing formwork for one of the most important projects of the moment, the Montabliz viaduct. It takes on special prominence for being, at the time of its construction, the highest viaduct in Spain with a 130 metres high pile, unique in the whole of Spain.

Its 721 metre-long structure began to be built in 2006 although it was not inaugurated until 2008. The difficulties presented by this project are not only centered on the height, but also on the meteorological agents and the orography of the valley, conditionning factors that meant that every detail had to be taken care of.