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Le Ferrovie federali hanno dato ufficialmente il via, sabato nel canton Soletta e alla presenza della consigliera federale Doris Leuthard, ai lavori di potenziamento della linea fra Olten e Aarau, che verrà portata a quattro binari sulla sua intera lunghezza.
L'elemento cardine del progetto, il cui costo è stimato a 855 milioni di franchi, sarà la galleria di tre chilometri, che verrà scavata a Eppenberg.
A opera conclusa, si colmerà una delle più vistose lacune della rete e, soprattutto, del trafficatissimo asse est-ovest. Dal 2020 permetterà cadenze al quarto d'ora tra Berna e Zurigo. Ne beneficerà anche il trasporto delle merci e si spera che contribuisca a sgravare la vicina e sempre intasata autostrada.
ATS/dg
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