Object: Hiring A Company To Prepare The Studies, Basic And Executive Engineering Projects, And Execution Of The Rehabilitation Works, Structural Reinforcement And Widening Of The Platform Of 5 (Five) Special Works Of Art (Oaes): Viaduct Over The Rffsa (Km 489+250), Bridge Over The Arroio Vacaquá (Km 491+680), Viaduct Over The Rffsa (Km 553+900), Viaduct Over Rffsa (Km 564+750) And Bridge Over Arroio Carolina (Km 565+190) On Br-158/Rs, Located On Rodovia Br-158/Rs, Under The Jurisdiction Of