Realization of the project was aimed at modernization of 10 railway objects, including 8 engineering facilities (bridges, viaducts, culverts) and 2 linear ones. Before modernization these objects were so called "bottlenecks", causing reduced speed limit. Capacity of this railway line as well as safety of train traffic improved soon after completion of works. We designed and realized engineering facilities adapted to train velocity amounting to V=160 km/h and in one case eve up to V= 200 km/h. We were one of the first ontractors in Poland to realize the innovative solution regarding direct assembly of tracks to the viaduct superstructure in the ERS system