They plan, design and oversee construction and maintenance of building structures and infrastructure, such as roads, railways, airports, bridges, harbours, dams, irrigation projects, power plants, and water and sewerage systems. They are responsible for constructions like dams, building, subway tunnels, bridges, highways, and other forms of infrastructure that has become a part of our daily life. A civil engineer helps build and maintain infrastructures such as roads, bridges, buildings, or water resources. They help get water, electricity, people, and goods from place to place by creating the networks and facilities needed to make transportation possible.