The subject of the project is the processing of project documentation for the project “ŽSR, completion of the marshalling station Žilina Teplička and the downstream railway infrastructure in the node Žilina” broken down:• documentation for the building permit, including engineering activities;• documentation for the implementation of the construction, including assessment of TSIs;• documentation for the selection of the contractor. The prepared documentation and subsequent construction will create a global project “ŽSR, completion of the marshalling station Žilina Teplička and the downstream railway infrastructure in the node Žilina”, which is mainly focused on the modernisation of the railway node Žilina. Modernisation is a prerequisite for the full establishment of a north-south transit corridor meeting the requirements of the Technical Specifications for the interoperability of Europe’s conventional rail systems. This modernisation is also a necessary milestone in the transition of operation to more economically efficient alternating electric traction with single-phase 25 kV, 50 Hz systems and for a full transition to the dispatcher control of upgraded track sections. For future infrastructure upgrades, it is now necessary to draw up project documentation. The project seamlessly follows the processing of the project preparation of the building in question with the support of the Operational Programme Transport 2007-2013.