All employees heretofore engaged in the performance of duties for any authority in the exercise of functions transferred by this part to the board of highways shall be transferred with such functions to the board of highways to the full extent necessary and practicable to carry out the purposes of this part and shall, so far as practicable, continue to perform the duties heretofore performed, subject to the state civil service law.
La. Roads, Bridges and Ferries § 48:1166