1906
120th anniversary
OpeningSwitzerland

Simplon Tunnel Inauguration

Swiss Federal Railways

Brig

August 31, 1906

Summary

The Simplon Tunnel between Switzerland and Italy opened, creating the longest railway tunnel at the time.

Full Story

On August 31, 1906, the Simplon Tunnel was inaugurated, spanning 12.5 miles under the Alps and connecting Brig, Switzerland, to Iselle, Italy. Overcoming extreme heat, water ingress, and geological instability required pioneering ventilation and cooling systems. Electric locomotives were introduced early due to the tunnel's length. This engineering marvel slashed travel times between northern and southern Europe, boosting tourism and commerce. It symbolized international cooperation in rail infrastructure and influenced later Alpine tunnel projects like the Lötschberg.

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Quick Facts

Date
August 31, 1906
Event Type
Opening
Country
Switzerland
Years Ago
120

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