Bidding Announcement: Adif High Speed ​​- Presidency. Object: Consulting And Technical Assistance For The Control Of The Execution Works Of The Construction Project Of Structural Reinforcement Works And Systems Of Containment And Protection Of Various Structures In The L-30 Gijón-Sanz Crespo Line For Sale Of Bathrooms. Section: León Classification-La Robla And In The Lav Md-As. Section: Palencia-León. File: 3.25/20830.0099.