On a section of the line, the construction of a new two-track line is planned, while on a section of the line an upgrade of the existing track and the construction of an additional second track is planned. All unprotected level crossings will be removed. Most will be replaced by grade-separated crossings. The project, in addition to the rail route itself, includes the reconstruction of the existing Šentilj tunnel and the construction of two new tunnels Pekel and Štrihovec, a new viaduct Pesnica with a length of over 900 m, 3 underpasses, 4 overpasses, 4 subways, 1 footbridge, 3 bridges, a larger number of culverts and supporting and retaining structures. The project also includes electrification of the line and the signalling, safety and telecommunication equipment of the line. Other communal and energy infrastructure of the investment area are also discussed. The project documentation also includes a flood safety study and a Pre-investment design.