Mark has been practicing in the transportation industry throughout Texas for more than 43 years. For more than half of his career, he has served in a variety of capacities for the Fort Worth District of TxDOT, including the Director of Transportation Operations and Area Engineer in North Tarrant and Wise/Jack Counties. Additional roles included bridge and structure design, advanced roadway project planning and schematics, environmental, roadway and freeway design, maintenance, and operations.