Aarsleff Rail to Construct New Passing Tracks at Kalvebod
Aarsleff Rail will help increase capacity on one of Denmark’s busiest railway lines after winning the first part of the project for new passing tracks at Kalvebod in autumn 2025.
Aarsleff Rail has secured the initial phase of the task to build new passing tracks at Kalvebod—a project aimed at improving capacity and traffic flow in Danish rail transport. The contract was awarded in autumn 2025 by A/S Øresund following an evaluation where Aarsleff Rail achieved top scores in all three criteria: price, organization, and collaboration.
The passing tracks at Kalvebod in Copenhagen are part of the Infrastructure Plan 2035 and will strengthen the connection between Roskilde, Copenhagen South, and Copenhagen Airport. The project will benefit both passenger and freight traffic and contribute to a more robust and flexible railway infrastructure in the capital region.
The project includes restructuring the Hammelstrupvej bridge to accommodate four tracks instead of the current two, as well as replacing two pedestrian bridges over the railway. The two new tracks require the installation of a new traction power supply. The existing neutral section must also be relocated, and a pumping station will undergo minor reinforcement work to make room for the new tracks. Additionally, sheet pile walls will be installed along the entire stretch to stabilize the embankment and create space for the two new tracks.
More specifically, the first part of the work will include:
- Construction and civil works for passing tracks, bridges, and pedestrian bridges
- Geotechnical investigations
- Installation of ballast layer (7 cm below sleepers)
- Earthworks: removal and relocation of soil
- New drainage system
- Bridge widening
- Construction of two new pedestrian bridges
- Installation of sheet pile walls and noise barriers
- Coordination with Banedanmark regarding the signaling program
The project is being carried out as a turnkey contract and began in autumn 2025 with a project development and collaboration phase (SPU phase). During this phase, the client and project partners have worked together to develop and optimize technical solutions based on a target price of DKK 330 million. The work is being carried out in close collaboration between Aarsleff Rail, Per Aarsleff Fundering, Munck Havne & Anlæg, and Sweco.
Since the kick-off, intensive work has been done on technical solutions in various working groups divided by professional disciplines.
The project is expected to be completed in 2028.