The kinds of work you will do depends on your knowledge and skill level and the type of work needed at a job site. You may build and repair roads, highways, bridges, and tunnels, construct residential and commercial buildings, install gas distribution and gas transmission lines, or perform other kinds of work. Among the tasks you may be doing are drilling and blasting site areas, building scaffolds, preparing and cleaning up a job site, laying pipe underground, placing concrete, flagging and controlling traffic on highways, and removing asbestos and lead from buildings, to name just a few.