Founded in 1946, the Connolly-Pacific Company is a rock quarrying and marine construction company based in Long Beach, California. That began operations in the 1930's, initially constructing the Los Angeles and Long Beach breakwaters for the U.S. Army Corps of Engineers.
The company engages in the of sale of rock products, and providing marine construction services in Southern California. Primarily from Los Angeles, California to San Diego, California.
The Connolly-Pacific Company is a wholly owned subsidiary of Knife River Corporation. Knife River Corporation is a wholly owned indirect subsidiary of MDU Resources Group Incorporated, operating the company’s construction materials and mining operations.