Underpass Interchange Herne, Tunnel Baukau

Construction of the Tunnel “Baukau” including operational equipment in the course of expansion (6-lane) of the motorway A43 in Herne during full operation of road and rail traffic.

Client

Landesbetrieb Straßenbau Nordrhein-Westfalen
Regionalniederlassung Ruhr Haus Bochum
Harpener Hellweg 1
44791 Bochum
Germany

Contractor

BeMo Tunnelling GmbH, Niederlassung West
Civil Engineering, Industrial and Steel Construction Dortmund

Project location

44653 Herne
Germany

Start of construction

2019

End of construction

expected 2023

Project total value

56.6 million €

Geology

The foundation soil is very different. The fillings are inhomogeneous, especially in the road areas and at the railway embankments. Below the fillings there are sandy and clayey silts. The next layer under is Emschermarl, where clifts are expected and water-bearing layers as well.

Technical Data

Construction of the Tunnel “Baukau” including operational equipment in the course of expansion (6-lane) of the motorway A43 in Herne during full operation of road and rail traffic.

New building of an approx. 550 m long tunnel, partly in cut-and-cover method and with bored piles incl. an approx. 180 m long trough wall as well as construction of civil engineering structures e.g. supporting wall, operations building, escape tunnel, retention basins for contaminants and the crossing of a railway embankment below a protective pipe arch.
Soil or rock - removing and utilization approx. 90,000 m³
trough and tunnel
Excavation material below the cover approx. 33,500 m³
concrete trough RQ I and RQ II approx. 5,700 m³
concrete tunnel RQ III up to RQ VI approx. 21,250 m3
bored pile wall Ø 90 cm approx. 8,300 m²
bored pile wall Ø 120 cm approx. 5,750 m²
pipe jacking Ø 1.60 m approx. 950 m

Further project related information

Dewatering in consideration of ground water flow and different levels of water pollution.