Construction of roads involves the paving, rehabilitation, and/or reclamation of degraded pavements in order to achieve a state of good repair and increase road traffic safety. Road construction involves the use of asphalt, liquid asphalt, concrete, soil stabilization, rebar, paving and pavement recycling machines, and other road repair materials.

Highway bridges deteriorate in proportion to the number and weight of the vehicles that pass over them and in proportion with their exposure to deleterious items in the environment, such as road salts.