William Simpson & Associates

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23 Orchard Ste 250
Lake Forest, CA 92630

William Simpson Associates Inc. has been a leading provider of structural engineering services since 1957, known for its commitment to technical excellence, creativity, and building long-term relationships with clients. The firm offers innovative solutions across a wide range of project types and sizes, utilizing state-of-the-art modeling software to ensure flexibility and functionality in their designs.

With over six decades of experience, the team at William Simpson Associates consists of highly educated and skilled engineers and designers, specializing in residential, commercial, industrial, and infrastructure projects. Their expertise encompasses everything from custom homes and tilt-up buildings to complex shoring systems and bridge design.

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