During engineering design phase of the Pamplona-Estella-Logroño highway, three contracts for detailed design were executed, one for each section: Puente La Reina bypass, Zizur-Puente La Reina and Puente La Reina-Estella Bypass. This infrastructure forms one of the main communication axes in the region. Subsequently we also performed site supervision as part of technical assistance to site management of the public work concession contract for construction, conservation and operation of the infrastructure.