This project which pertains to the construction of infrastructure for the New Lianokladi - Domokos High-Speed Railroad Line, from Kilometric Point 14+000 to Kilometric Point 25+000, is a section of the entire NHSRRL infrastructure construction project from Kilometric Point 0+000 to Kilometric Point 52+000. This is the most difficult section of the Athens - Thessaloniki line. The existing Railroad Line from Tithorea RR Station passes between Mt Oiti and Kallidromo, it then descends to the Sperhios valley heading towards the Lianokladi RR Station.
The Railroad Line from kilometric point 14+000 - 25+000 also includes the construction of 5 railway bridges of total length 1,796m, as well as the construction of an underground bore twin tunnel, of total length (including the technical works of the entrance and the exit) 6,409m the right tunnel and 6,370 m the left tunnel. It then climbs up to the Domokos plateau and descends to the Plains of Thessaly heading towards the Domokos RR Station. The NHSRRL is a section of the Athens - Thessaloniki RR Axis, which is the only Railroad Line connecting Southern to Northern Greece and Greece with other countries through Turkey, Bulgaria and the former Yugoslavia region.