Road department is part of Government Services, if I had to guess. Also at the bottom is link to the trunked system used by American Electric Power, though I don't know if that is Big Sandy.
The 7K60FX Emmission Designations may indicate their system is using MOTOTRBO which no scanner alone can receive. Try the frequencies but if you hear no voice and buzzing sounds that is the case.
Also for future reference, as stated at the top of this page, "Database Discussion Forum - This forum is for questions about the database such as how to use it, layout or usability issues or suggestions for improvement. It is not for pointing out wrong information or getting help with programming."