Graniterock continues producing asphaltic concrete materials from its 1936 California first asphaltic concrete plant site nearly 90 years later.

Since 1900, Graniterock has provided the California construction industry with quality materials and products for building the perfect infrastructure job, whether that's a major highway, airport runway or bridge. Recognized as one of the state's top heavy civil engineering companies, Graniterock offers experts in asphalt, concrete, aggregate, paving, grading, underground, green building and general construction services. Graniterock People say “Yes, we will” when asked to meet any customer's needs.