From 2022 to 2025, SWIETELSKY carried out a comprehensive track renewal project on the railway section between Roskilde and Ringsted. The project involves a full modernisation of the infrastructure, with a focus on operational reliability, capacity, and long-term robustness along one of Denmark’s key railway connections.
The project includes mechanised track renewal over a total of 57 km, with sleepers and rails replaced using specialised renewal trains (RUS 1000 and PM1000). In addition, extensive ballast works are being carried out, including ballast cleaning and manual ballast replacement, as well as the removal, installation, and adjustment of turnouts. The scope also includes welding, stress adjustment, and final track alignment.
A wide range of civil and construction works is being executed, including replacement of the track formation, regulation of shoulders, ditches, and embankment slopes, reinforcement of railway embankments, and treatment of soft ground areas. The project further comprises lateral track realignment, works at platforms and structures at three stations, and the establishment of construction sites, depot areas, and access roads.
As an integral part of the project, comprehensive overhead line, signalling, and power supply works are being performed. These include modification and adjustment of catenary support systems, installation of new equipment at turnouts, relocation of signals and ATC equipment, as well as handling and rerouting of cables and trackside installations. The works conclude with testing and commissioning of both the track and signalling systems.
The project is executed in multiple stages, with commissioning approval granted for each stage, and with adjacent tracks kept in operation throughout. This places high demands on planning, logistics, coordination, and railway safety, carried out in close cooperation with the client and other stakeholders.
The project demonstrates SWIETELSKY’s experience in managing and delivering highly complex track renewal projects, where multiple disciplines, interfaces, and stringent safety requirements must be handled simultaneously.
Project Facts
- Project period: March 2022 – December 2025
- 57 km mechanised track renewal (sleepers and rails)
- 39 km ballast cleaning and 7 km manual ballast replacement
- 14 turnouts removed and installed
- Approx. 1,000 m of lateral track realignment
- Approx. 35 km regulation of shoulders, ditches, and slopes
- Extensive drainage, soft ground, and embankment works
- Construction and station works at 3 stations
- Overhead line, signalling, and power supply works
- Multi-stage project with continuous commissioning
- Works carried out with adjacent tracks in operation