Even if FDoT is held responsible, most if not all of the states have something called a Tort Claims Act (sometimes called sovereign immunity) that statutorily limits governmental liability. The purpose of these statutes is to shield the taxpayer from outlandish jury awards, but most of them have not been updated in years or decades. I did a quick internet search and it appears that $200,000.00 may be available to each person hurt of killed. There may be another $100,000.00 available if the person has dependents. Not much there.