Granite Construction Inc. is an American company, a member of the S&P 600 Index based in Watsonville, California and is the parent corporation of Granite Construction Company. The company is both a heavy civil construction contractor and construction aggregate manufacturer, owning or leasing quarries in several Western states for extracting mostly sands, gravel, and crushed stone products. Incorporated in 1922 and publicly traded since 1990, Granite Construction Company is composed of a construction materials division, and two construction operating divisions. Under each Group are numerous regional offices, quarries, asphalt and concrete plants. Granite does work in both public and private sector transportation infrastructure projects that include: roads and highways, bridges, dams, water reservoirs, railroads, seaports and airports. The materials division produces construction materials such as sand, gravel, ready-mix and asphalt concrete. In 2021, Granite was ranked 25th on ENR's Top 400 Contractors.