The former mayor of Superior and Duluth is serving time in the Douglas County Jail.

Herbert William Bergson, 62, of Madison, pleaded no contest in Douglas County Circuit Court on Nov. 30 to misdemeanor counts of obstructing an officer and failure to install ignition interlock device. He was sentenced to one year of probation, 20 days in jail and $729 in fines, court costs.

Online jail records indicate Bergson was booked Friday, Dec. 28, to serve his sentence.

According to the criminal complaint, Sgt. Cory Knutson with the Douglas County Sheriff's Office responded Feb. 13 to a property accident on East Lake Boulevard in the village of Lake Nebagamon. A vehicle had failed to navigate the turn and struck a tree, suffering extensive front-end damage. The driver of the vehicle involved was identified as Bergson.

Bergson is required to have an ignition interlock device installed on every vehicle owned by or registered to him and must not drive a vehicle without a valid ignition interlock, according to the criminal complaint. The vehicle involved in the accident had no ignition interlock installed.

Bergson reportedly told Knutson that his girlfriend was driving the vehicle. When he contacted Bergson's girlfriend by phone, Knutson found out she was in Madison.

Bergson served as Duluth mayor from 2004-08 and as Superior mayor from 1987 to 1995. A longtime Superior police investigator before entering politics, he is the only person who has served as mayor of both cities.