Originally determined eligible in the 1985 Caltrans Historic Concrete Arch Bridges in California Thematic Resources study; its continued eligibility was confirmed in the 2004 Caltrans Historic Bridge Inventory Update: Concrete Arch Bridges.
Granite Canyon Bridge (44 0012) is a reinforced-concrete, open-spandrel, fixed, parabolic-arch bridge with a single, two-ribbed arch span measuring 127 feet long. The bridge features a decorative cantilevered walkway and reinforced-concrete railings in an arched-window design. Most importantly, Granite Canyon Bridge is one of seven similar bridges along State Route 1 known as the Big Sur Arches. The Big Sur Arches are famous for their thick and heavily inflected piers, and thin arch rings and spandrel columns. The Big Sur Arches have been hailed as "the most beautiful public works projects in the United States."