He was also fined for having no insurance disc for his vehicle and failing to comply with traffic directions, by performing a U-turn on the Esplanade.
The first offences took place at 23:00 on 18 April.
St Helier Centenier Danny Scaife, prosecuting, told the Magistrate’s Court that police officers had seen Gouedard’s blue Suzuki motorcycle heading west along the Esplanade and then U-turning at the Gloucester Street traffic lights – a stretch of road where U-turns are not allowed.
When they caught up with him they found he had no insurance disc.
Pictured: The case was heard in the Magistrate’s Court.
A blood test at police headquarters revealed that he had 174 milligrams of alcohol in 100 millilitres of blood. The legal maximum is 80 milligrams.
Mr Scaife added that in the early hours of the following morning Gouedard was captured on CCTV collecting the motorbike and riding it home, while still over the limit.
Another test found 149 milligrams of alcohol in 100 millilitres of blood.
Advocate Stephen Wauchope, in mitigation, said: “Mr Gouedard was fully compliant with officers and entered guilty pleas.”
Advocate Wauchope argued against prison for his client, explaining: “He is capable of community service and he is capable of paying a fine.”
Relief Magistrate Michael McConnell told Gouedard that the offences could have resulted in a jail sentence, but gave him credit for his guilty pleas.
As well as a 30-month ban and community service order for drinking and driving, the Relief Magistrate imposed a £200 fine for not displaying an insurance disc, and £350 for failure to comply with traffic directions.
Gouedard must also retake the driving test after the ban has elapsed.