Since February this year the company HIDROSTANK, SL has supplied more than 400 boxes of its innovative auto-resistant polypropylene reinforced to carry out the longitudinal drainage channelling. HIDROSTANK, SL has worked closely with the company awarding winning (ALDESA CONSTRUCCIONES SA) and with the engineers of the technical direction, thereby providing the best solution to the longitudinal drainage. HIDROSTANK already worked in the only stretch of the highway already in use, ÁGREDA Circumvallation. Its 8.9 kilometers were opened to traffic in March this year. It was carried out by the of PAS-BRUESA temporary joint venture, which was awarded for an amount of 39.9 million euros.