Questions over the fate of the controversial toll-road operator Autostrade Per l'Italia, accused of poorly maintaining the bridge which crumbled in a storm in 2018 killing 43 people, have fuelled tensions within the ruling coalition government.
The anti-establishment Five Star Movement (M5S) has long insisted the billionaire Benetton family, which owns most of Autostrade via its Atlantia company, should be stripped of its concessions or forced out entirely.
The deal clinched in the small hours of Wednesday morning will see the “immediate transfer of control” of Autostrade (ASPI) to state lender Cassa Depositi e Prestiti (CDP), the cabinet said in a statement.
The amount that the Benetton family will get for Atlantia's 88 percent stake in Autostrade will depend on the price paid during the capital increase.
Autostrade will also pay 3.4 billion euros ($3.9 billion) in compensation related to the bridge collapse.
The deal also includes increased penalties for any future safety violations.
Prime Minister Giuseppe Conte had initially been reluctant to go to war with the Benettons over Autostrade.
But he had upped pressure on them over the past few days to come up with a deal, saying that “either the state receives a particularly advantageous proposal, or we will proceed with revoking” the road concessions.
The deal was welcomed by investors, with Atlantia stock jumping 25 percent in the morning on Milan's stock exchange.
But Carlo Alberto Carnevale-Maffe, a strategy professor at Milan's Bocconi University, told AFP the government “hunting down” a shareholder of a listed company “in a summary trial” was “a very negative sign for international investors”.
“It is possible that (the Benettons) did not perform the proper maintenance, but it is up to the courts to prove it, and it is also clear that the state bears a responsibility, because it did not carry out controls,” he said.
Atlantia, the parent group of Autostrade, is controlled by the powerful Benetton family. Autostrade is under judicial investigation, along with several transport ministry officials, for culpable homicide.
A total of 74 people are accused in the legal case, which has seen investigators use a super computer to trawl through thousands of documents and files seized from Autostrade offices and the transport ministry.
The Morandi bridge has since been rebuilt, while many more of Italy's road bridges are now thought to be at risk of collapse.