Saenz expands administration to reflect changing role of agency AUSTIN, Texas, Jan. 7 /PRNewswire-USNewswire/ -- The Texas Department of Transportation today announced selections for the final three members of Executive Director Amadeo Saenz's leadership team. The new Assistant Executive Director for Engineering Operations is John Barton of Beaumont. The newly-formed office of Assistant Executive Director for District Operations will be lead by David Casteel of San Antonio. The newly-formed office of Assistant Executive Director for Innovative Project Development will be lead by Phil Russell of Austin. "John, David and Phil are all outstanding professionals," said Saenz. "All of them understand...