Legacy Foundations
510-777-5000 8201 Edgewater Drive Suite 202 Oakland, CA 94621
303-694-2770 7601 Technology Way Suite 100 Denver, CO 80237
707-759-6858 1 Harbor Center, Suite 200 Suisun City, CA 94585
949-333-1500 530 Technology Dr Irvine, CA 92618
954-350-1232 10276 NW 47th Street Sunrise, FL 33351
949-333-1500 530 Technology Dr Irvine, CA 92618
949-333-1500 530 Technology Dr Irvine, CA 92618


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One of Shimmick’s unique specialty contracting capabilities includes deep, difficult foundations. Via our specialty contracting division Legacy Foundations, Shimmick specializes in deep foundation drilling, slope stabilization and shoring systems, ground improvement services, and shaft anomaly repair.

Shimmick has constructed foundations in numerous conditions and soil types, recently completing a series of 300-foot-deep foundations in one of the world’s most challenging geological formations for the Honolulu International Airport Guideway System in Hawaii.

Deep, Drilled Shaft Foundations

Shimmick maintains a modern fleet of heavy construction drilling equipment for efficient construction of deep, drilled shaft foundations and offers significant experience designing and constructing large-scale, challenging projects to the highest technical standard.

Slope Stabilization and Shoring

Shimmick uses slope reinforcement techniques such as anchors, piles and soil nails to mitigate the dangers that slopes can pose to structures and the lives within them. To stabilize a slope, first the depth of the failure plane is identified. Then, piles, soil nails, anchors or columns are inserted at an angle through the failure plane into the stable material underneath. This network of structural elements acts as a web that stabilizes the slope and alleviates the risk of collapse.

Ground Improvements

Shimmick mitigates difficult and dangerous soil conditions with sophisticated ground improvement techniques. Our ground improvement increases the load bearing capacity of the soil while decreasing the risk of settlement and liquefaction. We will analyze each site to determine which type of ground improvement is best for the structure and the soil conditions particular to that site. We offer extensive experience in numerous techniques, including dynamic compaction, vibro replacement (stone columns), soil mixing, and tip grouting.