S.C. Code Ann. § 57-3-20
The responsibilities and duties of the following division deputy directors must include, but not be limited to, the following:
(1) division deputy director for finance and administration:
a. financial planning and management;
b. accounting systems necessary to comply with all federal and/or state laws and/or regulations as well as all policies established by the Comptroller General; and
c. administrative functions, including recording proceedings of the commission and developing policy and procedures to ensure compliance with these policies and procedures.
(2) division deputy director for construction, engineering, and planning:
a. development of statewide strategic highway plans; and
b. directs highway engineering activities, including construction, design, construction oversight, and maintenance of state highways.
(3) division deputy director for mass transit:
a. development of a statewide mass transit system; and
b. coordinate the preservation and revitalization of existing rail corridors.