Dive Brief:
- Mark A. Ketchum was the son and grandson of engineers and made his mark on the family's chosen trade as a bridge designer with OPAC Consulting Engineers in San Francisco.
- Ketchum was on the team from T.Y. Lin International that did a seismic analysis and retrofit of the Golden Gate Bridge after California's 1989 Pria Loma earthquake.
- Ketchum was 60 when cancer took him.
Dive Insight:
Colleagues said Ketchum had a talent for being able to visualize structures and understand their structures and behavior. He was a co-founder of OPAC when several principals left Lin's firm after its employee stock ownership firm sold it to Dar Al-Handassah Consultants.
