Gli addetti alla manutenzione delle aree verdi lungo le autostrade raccolgono ogni anno, in media, una tonnellata di rifiuti per chilometro di carreggiata.
Per tenere puliti i 1'840 chilometri della rete e i 4'236 ettari di terreno che la costeggiano vengono spesi due milioni di franchi, informa inoltre l'Ufficio federale delle strade nella nota diramata mercoledì, nella quale si specifica che il malcostume impera soprattutto nelle aree di sosta prive di strutture di ristoro.
La manutenzione di prati, scarpate, siepi e parchi, il cui ruolo è fondamentale, comporta invece una spesa di 30-35 milioni annui.
ATS/dg
RG 18.30 del 07.06.2017: il servizio di Alessia Fontana
RSI Info 07.06.2017, 21:01
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