In the mid-1970s, the Florida Department of Transportation (formerly the State Road Department) started a sequence of events that eventually resulted in the transferral of hundred of miles of roadway from State of Florida maintenance to county control. The first step was the addition of an "S-" or "C-" prefix onto the original FDOT designation ("S" represented "secondary"; "C" represented "county"). State Road signs started disappearing from the "C" roads and were replaced by Manual on Uniform Traffic Control Devices (MUTCD) compliant county road signs in the early 1980s; the transition of "S" roads to county control took a bit longer. Many roads that were decommissioned in later years skipped the prefix step.