Bob O’Neil, a former ARTBA board member who helped build the Washington, D.C. subway system, died Feb. 3 in Bethesda, Maryland. He was 85.

O’Neil spent his entire engineering career at De Leuw, Cather & Company, later part of Parsons Corporation, where he retired as a division president. He worked on the design and construction of mass transportation projects around the world, including the 31-mile Channel Tunnel, or Chunnel, between England and France. He was chief engineer at the Washington Metropolitan Area Transit Authority in the earliest stages of the subway project.

A celebration of his life will be held at a future date. In lieu of flowers, the family asks that contribution be made to Johns Hopkins Medicine.