Bidding Adif - Presidency Announcement. Object: Writing Of The Construction Project And Execution Of The Works For The New Installation Of The Level Steps Located At Kilometer Points 65/957, 68/878, 72/040, 73/507, 75/357, 77/138, 80/270, 84/040 And 94/986 Of Line 516 Mérida -Los Rosales (Badajoz). File: 3.25/27507.0075.