According to experts in Railway Infrastructure national company the reasons are in the complex character of the bidding papers and the short terms. The participants also need some time to carry out a survey of the territory and the railway lines in this section. The main tender terms and conditions are unchanged. The reconstruction and electrification of Svilengrad - Turkish border railway line has been divided into three phases. The first one includes preparation and approval of a technical design for the whole railway section including design of building works and drainage facilities, of bridges, car and pedestrian overpasses and subways, etc. The second phase includes construction of all designed projects. The third phase comprises the commissioning of the whole project with the relevant tests, personnel training and maintenance programme. This major infrastructure project is the fourth in line in Transport operational programme at the smaller value - EUR 35m. The whole length is 18 km, this is the third section, the first being Krumovo - Parvomay due to end this June, the second is at an initial construction phase.