Granite Construction builds its way from coast to coast. The holding company operates through its main subsidiary, Granite Construction Company, a transportation and heavy construction contractor that works on public infrastructure projects, such as airports, bridges, dams, highways, mass transit, and tunnels. Granite's private sector projects involve site preparation for residential and commercial development. In addition to construction services, the company mines and processes aggregates and has plants that produce construction materials, such as asphalt and concrete. Granite has offices from Alaska to Florida. The firm was incorporated in 1922.