Preparation Of Design Documentation For The Following Tasks: Task 1. Preparation Of Design Documentation For The Renovation Of The Viaduct At Km 88.882 Of Line 272 Kluczbork - Poznań Main Task 2. Preparation Of Design Documentation For The Renovation Of The Bridge At Km 99.178 Of Line 014 Łódź Kaliska - Tuplice Task 3. Preparation Of Technical Documentation For The Renovation Of The Passage Under The Pedestrian Tracks At The Jarocin Station.