Spoorzone Delft

The existing rail connection that runs through Delft forms a bottleneck in the city. The railway overpass creates nuisance and potentially hazardous situations and has not been designed to handle the projected rail traffic in the years ahead. That is why the Delft rail zone is being subjected to a drastic overhaul. Among other things, the project includes a railway tunnel with underground station, parking facilities, a new council office, homes and offices, a park and water parties.

Spoorzone Delft
The Netherlands
Luchtfoto spoortunnel

Project details

Tunnel tubes and finishing

The contractors will be constructing new tunnel tubes at Station Delft, for which Strukton will be laying a double-track railway. In addition, Strukton will be realising:

  • The railway’s connection to the existing network
  • The overhead lines
  • The safety systems
  • The power supply
  • A new marshalling yard at the DSM site

In addition, Strukton will be realising the finishing for the new station hall at Station Delft: the walls, floors and ceilings of the platform in the eastern tunnel tube, the underground bike shed and the mezzanine (the floor connecting the passenger platforms, the bike shed and the station hall). Moreover, Strukton will be realising the connections between the station’s different levels in the form of staircases, escalators and lifts. Passenger safety is ensured by means of emergency exits, emergency escape routes and smoke screens.

Complex project

What makes working on this project particularly interesting is the fact that the various parties contracted for different activities in the station area are required to work in close collaboration in a relatively small space.



Construction of double-track railway

After a number of smaller modifications in preparation of the main project have been realised (work on the switches, minor adaptations to the overhead lines and the signal system), Strukton Rail is currently working on the rail connection in the section below ground level: two separated tunnel tubes that each accommodate one track. The cables come first, followed by the ballast mats to dampen sound and vibration, then ballast and sleepers, rails and overhead lines. This new railway section will subsequently be subjected to six months of technical testing. In 2015, we will be redirecting the existing railway above ground to connect to the new tracks in the tunnels, after which the railway tunnel will be taken into use.

Finishing and connections between floors

The finishing of the walls, floors and ceilings has been rounded off. This will be followed by a testing period of several months.