Our Company

Washington Rock Quarries is located just outside of Puyallup, Washington, and 40 miles southeast of Tacoma.

Established in 1990, our company has become one of the leading suppliers of quality construction aggregate products in the state of Washington. Prior to starting Washington Rock Quarries, founder Harry Hart was involved in heavy construction and portable crushing for twenty years. Click on the video link below to learn more.

Through a business acquaintance, Harry learned about a rock quarry for sale in the historic lumber town of Kapowsin, Washington. After researching the local industry, Harry observed that quarries in the Tacoma area were few and had limited resources. Washington Rock had the opportunity to supply quality quarry rock to customers at a fair price and from a more convenient location.

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King Creek Pit and Kapowsin Quarry
Eight years after opening Kapowsin Quarry for business, Washington Rock acquired King Creek Pit, a sand and gravel pit located three miles from the quarry. Together the two pits provide over one million tons of material annually to locations throughout the state and nationwide. Both King Creek Pit and Kapowsin Quarry are well known for their outstanding quality of crushed rock, sand, and other construction aggregates, which are approved for use by the Washington State Department of Transportation (WSDOT), the US Army Corp of Engineers, and the Federal Highways Division.

Our Mission
Washington Rock’s goal is to keep our customers happy by providing quality materials at an affordable price. We have been able to accomplish this by building two state-of-the-art facilities that produce a large variety of products. Our quality control program ensures that our products are tested daily and meet each customer’s specifications.

Learn More About Washington Rock

  • Projects
    Our projects have included SeaTac Airport, the Seattle Seahawks training field, Century Link Field, the Port of Tacoma, and South Sound Light Rail. Check out our projects page to read about project highlights.
  • Sales Team
    Washington Rock’s sales team works with customers to produce the materials that best meet their needs in the quantities they desire. Our sales team is comprised of  talented individuals who value their customers and believe in great customer service. Click here to learn more about each of our sales team members.
  • Kapowsin Quarry
    Kapowsin Quarry produces crushed rock and gravel, quarry spalls, riprap, and a large armor rock used in shoreline protection. All of these materials can be delivered locally. With nearly 350 million tons of material in reserve, we can supply our customers with consistent, quality material for years to come.
  • Product Expansion

    Over the last ten years, Washington Rock has supplied its enhanced-friction surface stone, Armorstone, to cities throughout the US. We have delivered as far away as St. Thomas in the Virgin Islands. Armorstone is an overlay aggregate used on bridge decks and road surfaces where traction is needed. Learn more about Armorstone on our services page.

    Our golf course materials business has also expanded to include deliveries throughout the Pacific Northwest. We provide construction sand, bunker sand, top dressing and fairway sand, and other materials to customers in Washington State, Oregon, and Idaho. Learn more about our golf course materials.

  • Quality Control Lab
    Our quality control lab is one of the few ASTM- and AASHTO-certified labs in the region. Our quality control team works hard to sample and test materials, assist in engineering new products, and meet clients’ stringent requirements.
  • King Creek Drying Plant
    Eight years after Washington Rock was founded, King Creek Pit was opened for business. King Creek produces a wide array of washed sand and washed rock products, such as pea gravel and concrete aggregates. Our high-capacity ALMIX aggregate drying and bagging plant allows us to dry sand, enhanced friction surface material, pea gravel, and other products. Dried products are deposited into Super Sacks, secured on pallets, and delivered to job sites. We also work with local trucking companies to deliver loads of topsoil, sand, crushed stone, and other products to residential and commercial customers.

WSDOT Approval
Many jobs require aggregate material to be approved by the Washington State Department of Transportation (WSDOT). You can find WSDOT approval reports for both Kapowsin Quarry and King Creek Pit below.

WSDOT Aggregate Source Approval Report for King Creek Pit

WSDOT Aggregate Source Approval Report for Kapowsin Quarry