Great Structures - Eppenberg Tunnel: expanding Swiss rail capacity through Solothurn
Great Structures · 0:43
Located in the Canton of Solothurn, the Eppenberg Tunnel was built to eliminate a critical bottleneck on the Aarau to Olten railway line in Switzerland. The route, which previously operated on only two tracks through Eppenberg-Wöschnau, Schönenwerd, and Gretzenbach, accommodates national and international passenger services alongside freight. By adding two tracks parallel to the existing line, the tunnel quadrupled capacity. Authorized under federal legislation in 2009, construction began in 2015 after funding was balanced against the New Railway Link through the Alps.
Source: Wikipedia
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