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Cade oggi, lunedì, l’ultimo diaframma della galleria di Silvaplana, nei Grigioni. Concretamente significa che i rischi associati al granito dello Julier sono stati superati e che dopo la conclusione dei lavori di scavo potranno iniziare quelli di consolidamento.
Prima di poter inaugurare la circonvallazione, lunga circa 1470 metri e costata complessivamente 70 milioni di franchi, ci vorrà comunque ancora un po’ di tempo.
Dovranno infatti essere completati anche i lavori relativi alle installazioni di esercizio e sicurezza della galleria, il cunicolo di sicurezza e la galleria a cielo aperto, nonché le centrali di controllo e parti di carreggiata ancora mancanti. L’inaugurazione della nuova infrastruttura è prevista nell’autunno del 2018.
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