Design, construction and installation works and the exercise of copyright (engineering) for the reconstruction of pedestrian bridges over the river Beli Osm in Trojan on 3 lots: 1: Design, construction and installation works and the exercise of copyright (engineering) for the site: Pedestrian Bridge Duskostina; 2: Design, construction and installation works and the exercise of copyright (engineering) for the site: Pedestrian Bridge Kapichō; 3: Design, construction and installation works and the