What materials and equipment are used to build roads and bridges?
There are hundreds of industries that provide materials and services for the construction of the nation’s highways, bridges, airports, ports and transit infrastructure systems. The principal materials used in highway and bridge construction include asphalt, aggregates, concrete, cement and steel. Highway and bridge construction is an important market for many of these suppliers. The U.S. Bureau of Economic Analysis provides information on the purchases and inputs used by industries in the United States. According to their data, output in the following industries is dependent on the highway and bridge construction.
