Nearly a decade after the catastrophic August 2016 flood, millions of dollars from a lawsuit over I-12’s concrete median barriers are being put to work improving drainage in Livingston Parish. A $21.5 million settlement will provide $6.4 million to modify roughly 13 miles of interstate barriers between East Baton Rouge Parish and Livingston Parish, creating additional openings to allow floodwaters to move more freely across the corridor. Constru…