Bidding Adif - Presidency Announcement. Object: Drafting Of The Construction Project And Execution Of The Works For Renovation Finally Useful Life Of The Protection Systems Of The Levels Located In The Kilometric Points 54/870, 65/858, 78/975, 83/124, 91/119, 102/415, 106/441 In The 200 Madrid Chamartín-Barcelona Line Of França, In The Province Of Huesca. File: 3.24/27507.0332.