Biscoe announced Todd's appointment June 3 after a four-week application process. He said 32 people applied for the position, but only 17 were qualified.
Biscoe cited Todd's prior experience as Precinct 2 commissioner from 1987 to 1991 and as mayor of Austin from 1991 to 1997 among his reasons for choosing him.
As commissioner, Todd championed public policy initiatives such as recruiting high-tech firms, implementing the Balcones Canyonland Conservation Plan and forming the Travis County Transportation and Natural Resources Department, the judge said.
"I had a great working relationship with him and always found him to be disciplined, dedicated, hardworking, reasonable and intelligent," he said.