Bulgaria opens 6.1 mln euro tender for upgrade of 9.3 km railway section Photo: National Railway Infrastructure Company / All rights reserved. SOFIA (Bulgaria), December 17 (SeeNews) - Bulgaria's state-owned National Railway Infrastructure Company (NRIC) said that it has launched a tender for an 11.9 million levs ($7.5 million/6.1 million euro) contract for replacing the tracks of a 9.3 kilometre railway section. The railway section connects the Obraztsov Chiflik and Ruse train stations, in the country's north, NRIC said in a tender notice, published earlier this week. The deadline for submitting offers is February 18, 2021. Bids will be ranked based on price, with 80% weight in the final mark, and time for completing works.