Technical specifications

Project description

  • Conversion and extension of the suburban railway station at main station, enlargement of the platforms across the DB (German Railway) track field, tunnel ceiling cover 2.5 m
  • Replacement of bored pile walls and outer walls of the existing structure by a beam-column system connected monolithically to the existing structure as well as to the inner lining of the platform extension.

Construction method

  • Mining technique (conventional method) protected by a pipe umbrella, length 46 m, manned pipe jacking with forward shield; diameter 1,600 mm two start shafts Inner lining of watertight reinforced concrete
  • Enlargement using conventional methods in two partial cross-sections (roof section and then base) with SCL lining, max. depth of advance 1.0 m, jet underpinning approx. every 7.0 m


  • Coarse clay with peat inclusions
  • marl
  • area with high probability of explosive ordnance

General data

Stadtbahn Dortmund, Suburban railway line I, Lot 20
reconstruction and extension of suburban

Stadt (Municipality) Dortmund
(Tiefbauamt - Building authority for civil engineering)

Wayss & Freytag Ingenieurbau AG

Construction period
2014 bis 2017

Net construction costs
€ 10.2 million

Reconstruction and extension of suburban railway
46 m
Construction method
Mining technique
Related Projects
Darmsheim Tunnel
Darmsheim Tunnel

The long-expected bypass in the Swabian town of Darmsheim will ensure an improved quality of life, since HGV traffic with approx. 23,000 vehicles will not pass through the town in future.

Read more
Stafelter Tunnel
Stafelter Tunnel

The approx. 2 km long „Stafelter Berg“ Tunnel, north of Luxembourg city is part of the new motorway section of ‚Route du Nord‘ and consists of two double-lane tubes. The tunnel drive was carried out conventionally and with the drill and blast method.

Read more
Tridel Tunnel
Tridel Tunnel

Due to an advantageous layout of tunnel portal and tunnel excavator is was possible to do without shunting bays and laborious shunting during the construction of the single-track railway tunnel.

Read more

Cookies Policy

Our website uses cookies to improve your experience. Certain cookies can contain personal information. We deactivate Cookies, unless you allow Cooky usage.
Additional information

Allow Cookies
Do not allow cookies
Cookies Settings