Established in 1990, Washington Rock Quarries has become well known in the construction industry for producing high-quality crushed rock, sand, and soil products in standard and custom specs.
Located just outside of Puyallup, Washington, and 40 miles southeast of Tacoma, Washington Rock’s two mines produce over 1 million tons of aggregate products annually. Our aggregate source is approved by the Washington State Department of Transportation (WSDOT), and our products have been used by the US Army Corp of Engineers and the Federal Highways Division.
Washington Rock’s goal is to provide customers with quality materials at an affordable price. Our certified quality control process, state-of-the-art mining processes, and experienced team members make this possible. Click on the video below to learn more.
Kapowsin Quarry is an open-surface basalt mine that sits just above the northeastern end of Lake Kapowsin. With nearly 350 million tons of material in reserve, the quarry is a trusted source for crushed rock and gravel, quarry spalls, riprap, and armor rock used in shoreline protection. View the WSDOT Aggregate Source Approval Report for Kapowsin Quarry here.
King Creek Pit is a sand and gravel pit located three miles from the quarry. The pit includes a high-capacity ALMIX aggregate drying and bagging plant as well as a state-of-the-industry washing plant. Our pit produces high volumes of topsoil and sand blends as well as specialty products like Armorstone® and infill sand. View the WSDOT Aggregate Source Approval Report for King Creek Pit here.
Quality Control Lab
Our quality control lab is one of the few ASTM- and AASHTO-certified labs in the region. Our quality control team continually samples and tests materials, assists in engineering new products, and helps our products meet clients’ stringent requirements.
Learn more about our quality control program in the video below.
- Lake Kapowsin Day
Lake Kapowsin Day is an annual celebration of the heritage and biodiversity of Lake Kapowsin. Hosted by Friends of Lake Kapowsin (FOLK) and the Aquatic Reserves division of the Department of Natural Resources, Lake Kapowsin Day is held mid-year and includes activities and educational displays.
Washington Rock typically hosts an activity like rock painting. Washington Rock’s Kapowsin Quarry operation can be seen from the northeast end of Lake Kapowsin.
- Lake Kapowsin Day
Washington Rock offers two scholarships every year to one young man and one young woman from Orting High School. The scholarship offers financial aid for the trade school of their choice.
The J. R. Wilson Memorial Scholarship and the Steve A. Chism Memorial Scholarship were established in memory of our operations manager, J. R. Wilson, and our quality control assistant, Steve Chism. Both J. R. and Steve were hard workers whose service helped Washington Rock to grow into the successful business it is today. We hope that those who receive these scholarships will remember the importance of dedication and teamwork.
Washington Rock Quarries is proud of its membership with several professional associations, including the National Stone, Sand, and Gravel Association (NSSGA), the Washington Aggregates and Concrete Association (WACA), the National Utility Contractors Association (NUCA), the Western Washington Golf Course Superintendents Association (WWGCSA), the Northwest Turfgrass Association (NTA), and the National Bridge Preservation Partnership (NBPP).