34 year old Kirk Martin plead guilty to Driving While Ability Impaired in Town of Owego Court last week.
Monday, the Tioga D-A also received Martin's letter of resignation.
Martin took a voluntary leave after his arrest in February.
State Police say he was driving a car that went off Route 17 and overturned in median.
Martin paid a fine and was released on a 1 year conditional discharge.
The Chemung County D-A's office prosecuted the case.