Job Summary. Performs a variety of skilled manual tasks and operates light to heavy and specialized equipment requiring journeyman level skills in the general construction and maintenance of County roads, bridges and related facilities. Responsibilities and Duties. Operates 5 and 10-12 yard dump trucks with a variety of trailers, front wheel loaders, rollers (pneumatic, double and single drum vibratory), backhoe, brushcutter, water tankers and tr...