Position Overview. The Platte County Highway Department has an opening for a full-time office clerk. Compensation is based on experience. All candidates must complete a Highway Dept. employment application to be considered. Applications are available in the Highway Dept. office at the Platte County Court House, 2610 14th St. Columbus, NE 68601 or by contacting the office (402) 563-4909. Applications must be received before 5:00 PM on January 31, ...