MILAN (Reuters) – Italian infrastructure group Atlantia said on Thursday it had finalised the sale of its controlling stake in Italian motorway unit Autostrade per l’Italia in a deal worth 8.2 billion euros ($8.6 billion). The closing of the transaction marks the definitive exit of the Benetton-led group from the motorway business in Italy almost four years after the collapse of a bridge run by Autostrade in Genoa, which killed 43 people in 2018. Autostrade manages more than 3,000 kilometres of toll roads across Italy under long-term concessions granted by the Italian state. It is responsible …