Escape Gallery Reutherberg Tunnel



Regierungspräsidium Freiburg, Referat 46.1 Dienststelle Offenburg


BeMo Tunnelling GmbH

Project location

B294 bypass Wolfach, Schwarzwald, Germany

Start of construction


End of construction


Project total value

7.7 million €


Flaser gneiss

Technical Data

Construction of a new parallel escape gallery with 8 crosspassages (CP) to the existing road tunnel. 1 crosspassage to the underground control room.

Escape gallery length: 992 m
Total length of 9 CP: ca. 300 m
Cross-section: ca. 13 – 26 m²

Excavation: drill & blast (ca. 21,000 m³)
Design: shotcrete support, shotcrete lining / sprayed concrete lining, shotcrete (ca. 6,000 m³) lining, reinforcement steel (ca. 75 t), invert arch / base slab (not reinforced ca. 1,000 m³), area wise installation of in-situ concrete secondary lining (reinforced concrete: 1,000 m³), cable protection tubes (ca. 12,800 m), open cut works
Opening of concrete lining of the existing tunnel by concrete wire saws

Further project related information

Structural Analysis and Detailed Design (work & as built drawings):
BeMo’s Tunnel-Design Department, Innsbruck, Austria