

Principals
Jeffrey E. Haight, S.E.
Jeff began his engineering career in 1988 as a structural designer working on commercial and educational projects. In 1992 he joined Peter W. Ehlen and Associates as a project engineer for educational, healthcare, governmental, commercial, industrial, and residential projects. In 1999 he became a partner with Peter Ehlen and John Spiess to create the firm Ehlen Spiess & Haight, Inc., which he currently serves as President.
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliations:
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Structural Engineers Association of Southern California
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California Office of Emergency Services Safety Assessment Program Volunteer
Deployed to St. Bernard Parish, LA after Hurricanes Katrina and Rita -
American Institute of Steel Construction
Mark Crittenden, S.E.
Mark worked in Oxnard, CA for nine years for a multi-faceted A/E firm before coming to Santa Barbara in 1985 to open his own firm, Mark Crittenden, Structural Engineers. His experience grew as he worked on a wide variety of commercial, industrial, historical, religious and residential buildings, utilizing a wide variety of materials, methodologies and site conditions. In 2006 he joined Ehlen Spiess & Haight, Inc. as a part- time project engineer working on police facilities, school and commercial buildings. In August 2011 he became a full time project engineer. In June of 2018 Mark became a partner, and in 2019 became Vice-President of Ehlen Spiess & Haight, Inc.
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliations
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Structural Engineers Association of California
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American Institute of Steel Construction
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American Society of Civil Engineers- Structural Engineering Institute
Senior Structural Engineer
John W. Spiess, S.E.
John graduated from Purdue University in 1970 with a Bachelor of Science degree in Civil Engineering. He joined the firm in 1984, co-founded Ehlen & Spiess, Inc in 1994. In 2019 John retired as a Principal and is currently a Senior Structural Engineer.
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliations:
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Structural Engineers Association of Southern California Tri-Counties Chapter Director
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California Office of Emergency Services Safety Assessment Program Volunteer
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American Society of Civil Engineers Structural Engineering Institute