07.02.19. Preparation of Main Designs for Heavy Maintenance (Road Rehabilitation-Upgrading) of the State Roads IА 1, IB 33 and IB 34: Lot 1: IA 1, Ražanj - Aleksinac, Lot 2: IB 33, Požarevac - Lješnica, and Lot 3: IB 34, Bratinac - Braničevo, Contract ID