Perform preventative maintenance and make repairs to all swamp coolers, heat and air conditioning units and fuel pumps by adjusting and changing belts, seals, gaskets, lubricating motors, cleaning and repairing water and fuel lines, changing filters, replacing motors, fans, bearings, repair and remodel duct work. Perform bridge deck repair, including crack and joint sealing, roto-milling of both flexible and rigid bridge decks; Perform bridge superstructure maintenance and repair, including painting, bridge curb repair, wheel guard repair, and rail repair; Perform section wide right of way weed spraying.