Herrschaftsbuck Tunnel

Client

Regierungspräsidium Freiburg, Ref. 47.3,
Dienstsitz Bad Säckingen, Rathausplatz 5
79713 Bad Säckingen
Germany

Contractor

BeMo Tunnelling GmbH
in Joint Venture with Subterra a.s.
BeMo-share in JV 50 %

Project location

A 98, AD Hochrhein-AD Karsau
79618 Rheinfelden
Germany

Start of construction

2017

End of construction

2020

Project total value

31.5 million €

Geology

Layers of keuper (Gipskeuper), clayey Keuper (Lettenkeuper), lacustine limestone (Muschelkalk), Karst formation
High ground water level approx. 404.60 mAD

Technical Data

• double-lane motorwaytunnel, 2 tubes (North- and Southtube)
• Northtube
Tunnel Length: 485.00 m
Mined Excavation: 447.20 m
Cross-Section: 101.00 m²
• Southtube
Tunnel Length: 475.00 m
Mined excavation: 428.65 m
Cross-Section: 163.00 m²
• Final Lining:
In-situ concrete (reinforced - Northtube: 40-60 cm/ Southtube 60-80 cm), waterproofing membrane (“KDB”) water pressure tight,
PP fibre reinforced concrete in the arch
• 1 Cross Cut Length: approx. 19.00 m
Cross Section approx. 18.00 m²
• Execution: drill and blast, using excavators, NATM
• Support: shotcrete

Further project related information

Road Construction works in the tunnel including road surface, drainage, installation of empty conduits for cables, construction of emergency sidewalks.