Technical specifications

Scope of work
Construction in two Lots

  • Lot 1: approx. 300 m South-North-Tunnel with 850 m ramp and western junction
  • Lot 2: approx. 675 m North-South-Tunnel with three ramps approx. 85 m; connection to various subterranean garages, ground levels 7 m to 14 m; 36,000 m³ concrete; 120,000 m³ excavatio

Construction method

  • Cavern with diaphragm walls or bored
  • under water concrete with rear anchoring
  • Top-Down method

General data

Tunnel Kö-Bogen

Client: Landeshauptstadt (regional federal land capital of) Düsseldorf
Amt für Verkehrsmanagement (authority for traffic management)

Wayss & Freytag Ingenieurbau AG
as technical leader of a joint venture

Construction period
2010 to 2016

Construction costs
€ 114 million

Road tunnel
300 m + 675 m
Construction Method
Cavern with diaphragm walls or bored

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