Civil Engineering Degree Online - Civil engineering is among the oldest branches of the vast field of engineering. Civil engineers create, construct, and maintain all types of public systems and structures, and are literally the backbone of any city or town. Civil engineers are often responsible for any of the following tasks: design and/or construction of road systems, municipal buildings and centers, airports, as well as water supply and sewage systems that include tunnels, bridges, dams, and filtration structures.