Nebraska Revised Statutes Chapter 39. Highways and Bridges § 39-2308.03. Licensees;  additional licensure;  requirements

The holder of a county highway superintendent's license shall be entitled to hold a city street superintendent's license of the same or a lower level upon payment of the application fee for that additional license.  The holder of a city street superintendent's license shall be entitled to hold a county highway superintendent's license of the same or a lower level upon payment of the application fee for that additional license.  A second license shall be placed on the same three-year renewal cycle as the license holder's initial license.