In the event a municipality or county installs a cul-de-sac on a street or road under its jurisdiction and thereby discontinues use of any existing street or road right-of-way, such discontinuance shall not operate to abandon or vacate the unused right-of-way unless the governing body of the municipality or county adopts a resolution or ordinance, as appropriate, vacating the unused right-of-way.
Fla. Stat. § 177.086