Quality Unsurpassed

CalPortland Company (CPC) is the oldest continually producing portland cement company west of the Rocky Mountains. It was founded in 1891 with the opening of the Colton, California cement plant.

From its early years, CPC has remained a leader in the industry through its commitment to quality unsurpassed, technical superiority, and customer service. CPC’s reputation for coordinating product transportation and ensuring on-time delivery is considered by many to be the finest in the industry. Because of this, CPC has been used in some of the largest and most significant construction projects including the Hoover Dam, Los Angeles Aqueduct, Los Angeles City Hall, Staples Center, Arizona Capital Building, Safeco Field, SoFi Stadium, Allegiant Stadium, and the New Tacoma Narrows Bridge.

Into its second century, CPC has grown into a large, diversified company serving six western states and two Canadian provinces. We are the largest producer of sand, gravel and quarry rock in the Pacific Northwest, supplying the construction industry in Washington, Oregon, British Columbia and Alaska. In Arizona and Nevada we have become the market leader with our ready mix operations.

Enabled by mergers and acquisitions, CPC has expanded its line to include ready mix concrete, aggregates, building materials, sand, gravel, rock, and asphalt. Other materials available include FOX Blocks insulated concrete forms, road base aggregate, concrete sand processing, specialized backfill material, rip rap for flood control and sustainable building products.