Civil engineering is a professional field that involves the design, construction, and maintenance of the physical environment. It includes the design of public works like roads, bridges, and sewage systems. What do civil engineers do? Design, plan, and supervise the construction and maintenance of buildings, roads, bridges, tunnels, and water and sewage systems Ensure that structures can withstand the loads and stresses they will encounter during their lifespan Design transportation systems to help build smart, safe, and livable communities Protect the local population from environmental effects, such as water and air pollution, waste disposal, and soil contamination.