Seattle Aggregate Yard

With more than 130 years of experience serving contractors, concrete producers, paving companies, and public agencies, CalPortland provides high-quality aggregates backed by technical expertise, reliable logistics, and sustainable resource management.

The CalPortland Seattle Aggregate Yard stocks a wide selection of aggregates meeting City of Seattle specifications as well as WSDOT specifications. Our location provides convenient access to projects in Seattle and surrounding areas. We can arrange for delivery to your project or you may pick up what you need in your own truck.

What you can expect from CalPortland:

• Proven Expertise – Decades of experience producing aggregates for everything from residential projects to major infrastructure and highway construction.
• Quality Assurance – Consistent gradation, rigorous testing, and compliance with ASTM and project-specific specifications.
• Technical Support – Knowledgeable materials specialists available to help with mix compatibility, performance needs, and project requirements.
• Reliable Supply & Logistics – Strategically located quarries, truck and barge distribution, and dependable inventory management.
• Broad Product Selection – Full lines of crushed stone, concrete sand, masonry sand, gravel, and specialty high-performance aggregates.
• Sustainable Materials Leadership – Pioneering recycled aggregate solutions to reduce waste and conserve natural resources.

Partnering with CalPortland means consistent, high-quality aggregates delivered with technical confidence and operational reliability.

Approvals: Washington State DOT