When working in a field environment: Must possess mobility to work in the field; to sit, stand, and walk on level, uneven, or slippery surfaces; frequently reach, twist, turn, kneel, bend, stoop, squat, crouch, grasp and make repetitive hand movement in the performance of daily duties; to climb and descend ladders, to operate varied hand and power tools and construction equipment, and to operate a motor vehicle and various light and heavy equipment vehicles; strength, stamina, and mobility to perform medium to heavy physical work, to work in confining spaces and around machines; vision to read printed materials and a computer screen; and hearing and speech to communicate in person, before groups, and over the telephone or radio.? Under general direction, plans, schedules, assigns, reviews, and supervises the work of staff performing road, bridge, drainage system, and infrastructure construction and maintenance duties within a unit of the Roads Section of the Maintenance and Operations Division in the Public Works Department; plans and coordinates a comprehensive public works unit in the Roads Section; coordinates assigned activities with other County departments and outside agencies; provides complex staff assistance to management staff in areas of expertise; and performs related duties as assigned.