In 1962, the Board of Supervisors adopted an ordinance establishing the Surveyor's position as an appointive position. The Board was concerned that if the Road Commissioner position was appointive and the County Surveyor was elective, they may be forced to have two separate individuals. By making the County Surveyor appointive the Board was able to assure that a single individual held both positions. Mr. Keith continued to hold both positions until his retirement at the end of 1971. "Clinton Keith Road" was named after Mr. Keith in honor of his many years of service.
Following Mr. Keith, the position of Road Commissioner/Surveyor was held by three individuals during the period from April 1972 to December 1989.
In 1990, the Road Department changed its name to the Transportation Department and Franklin E. Sherkow was appointed Director of Transportation by the Board of Supervisors. In November of 1991, the Board created the County Transportation and Land Management Agency and appointed Mr.Sherkow as Director of the new agency, encompassing the Department of Transportation, County Planning Department, and Building and Safety Department. Mr. Sherkow served in a dual capacity as the Director of the Agency and Director of Transportation until August 1993 when David E. Barnhart was hired into the position of Director of Transportation. Mr. Barnhart retired in August 2002 and then Deputy Director George A. Johnson was appointed to the position. Mr. Johnson served as director between 2002 and 2008. Juan C. Perez served as the Director of Transportation from 2008 unti 2016. Patricia Romo served as the Director of Transportation from 2016 until 2020. The current Director of Transportation is Mark Lancaster.