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, and retired as President in 2018. John is a Senior Structural Engineer
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliations:
Structural Engineers Association of Southern California Tri-Counties Chapter Director
California Office of Emergency Services Safety Assessment Program Volunteer
American Society of Civil Engineers Structural Engineering Institute
Jeffrey E. Haight, S.E.
Jeff graduated from Cal Poly, San Luis Obispo in 1988 with a Bachelor of Science degree in Architectural Engineering. He joined the firm in 1992, became a principal in 1999, and is the President of the corporation.
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliations:
Structural Engineers Association of Southern California
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 graduated from Cal Poly, San Luis Obispo in 1976 with a Bachelor of Science degree in Architectural Engineering. He joined the firm in 2006 and became a principal in 2018 now serving as Vice-President.
Professional Registration in California: Structural Engineer, Civil Engineer
Professional Affiliation
Structural Engineers Association of California
American Institute of Steel Construction
American Society of Civil Engineers- Structural Engineering Institute
