Infrastructure professionals play a key role in making the world work. They build and repair roads, bridges, and ports; ensure that we have fresh water supplies; keep us connected to the internet; develop renewable energy resources; transport people and goods; and have many other responsibilities. There are more than 17.2 million infrastructure professionals in the United States. Infrastructure careers are great options for young people because many do not require a bachelor's or graduate degree. In fact, 53.4 percent of infrastructure workers have a high school diploma or less. Another benefit is that many infrastructure professionals earn salaries that are higher than the average for all workers, and the demand for workers in this field is high. Careers in Infrastructure provides detailed information about 10 specific infrastructure occupations, including many subspecialties, and offers numerous suggestions on how to explore careers while still in school.