The New York State Thruway Authority executive director is stepping down.

Matthew Driscoll has announced his retirement this month, marking the end of a five-year tenure with the Thruway Authority, according to state officials. 

Driscoll was appointeed as acting executive director of the Thruway in September 2017. Prior to his time at the Thruway, Driscoll served as commissioner for the New York State Department of Transportation. 

From 2001 to 2009, Driscoll served as the 52nd mayor of the city of Syracuse. In his two elected terms, he earned Syracuse the title "Emerald City" for his office's environmental and sustainability initiatives.

Driscoll's last day at the Thruway will be Dec. 20.