An 18-Wheeler driving on Interstate 37 in Corpus Christi overturned and spilled 5,000 gallons of No. 6 fuel oil onto Harbor Bridge. The 18-Wheeler accident happened at the end of August. Crews had to work to keep the fuel oil from going into the Corpus Christi Ship Channel. The police department believes that the driver was speeding on the turn and that is why the truck overturned. Cmdr....