The suspects, all of whom have technical posts, may be charged with manslaughter and failure to prevent injury and damage for the collapse, Italy's ANSA news agency reported.
The Mone Pinu bridge on the north end of Sardinia island collapsed Nov. 18 during torrential rains. The heavy rainfall and resulting floods killed 16 people on the island and displaced thousands of others.
Boston schools pull out free condoms over wrapping complaints
NBC reportedly holds celebs hostage to Jimmy Fallon's show