Divaca-Koper Railway 2nd Line Project which is owned by Slovenian State Railway company 2TDK for the 1st (LOT1) and 2nd part (LOT 2) is being built with the Kolektor CPG-Yapı Merkezi-Özaltın Joint Venture.

Within the scope of these projects; YM Construction has undertaken the excavation, support and inner lining works of the main tunnel, service tunnel, connection tunnel and escape tunnel of the T2-T3-T4-T5-T6-T8 tunnels with a total length of 18456 meters.

In addition to the tunnels, the 452-meter-long Gabrovica Viaduct construction, which will be constructed with incremental launcing technology (ILM), was also undertaken by YM Construction.