Gray wood tunnel
Gray wood tunnel | ||
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East portal
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use | Railway tunnel | |
traffic connection | Railway line Olten – Bern | |
length | 6295 m | |
Number of tubes | 1 | |
construction | ||
completion | 1995 | |
business | ||
operator | SBB | |
location | ||
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Coordinates | ||
East portal | 606296 / 208153 | |
West portal | 602062 / 203938 |
The gray wood tunnel is a 6,295 meter long, double-lane railway tunnel northeast of the city of Bern and part of the gray wood line of the Swiss Federal Railways (SBB) opened in 1995 .
The Grauholzlinie (more rarely referred to as the new Löchligut – Mattstetten line ) is part of the Olten – Bern line . The line relieves the bottleneck Bern- Zollikofen of the main lines to Burgdorf and Biel . It starts at the cross-free junction with Löchligut and then goes into the gray wood tunnel. At the other end, between 1995 and 2004, it led back to the main line Bern – Olten near Mattstetten. Since 2004 there has been the crossing-free Äspli junction , which leads straight to the new Mattstetten – Rothrist line.
The tunnel lies in a curve along its entire length, forming an "S".
It passes under the historical, wooded ridge of the Grauholz , where in 1798 the Bernese defenders had to surrender to the French troops, which shortly afterwards took the city of Bern.