Simpson Gumpertz & Heger is a consulting engineering firm that applies advanced engineering to buildings, infrastructure and special structures. The company s practice encompasses the design, investigation and performance evaluation, and repair and rehabilitation of constructed works. Particular services are bridges, structural design, antennas and telescopes, hydraulic structures, historic preservation and restoration, and repair and rehabilitation design. Its clients include architects, attorneys, contractors, corporations, government agencies, insurers, institutions and real estate. Simpson Gumpertz & Heger is a privately held company has locations in San Francisco, Boston, Los Angeles, New York City and Washington, D.C. The company employs approximately 50 people at its San Francisco office.