It shall be the duty of the county engineer to organize the road department in accordance with the policies of the county legislative authority, into such departments, divisions, districts, or units as may be necessary to meet statutory requirements and to perform such additional services as may be directed by policy of the legislative authority.

The county legislative authority shall adopt a written policy, including a chart or pictorial representation, designating the interrelationships of all positions in the road department from the county legislative authority through all employees. The chart shall clearly show the complete chain of command throughout the entire organization. Copies of such chart shall be retained in the office of the county engineer and in all road department shops in such a manner that it will be readily available to all road department employees and the general public.