A drunk driver from Michigan, who was so plastered she thought she was in Detroit when she crossed the Blue Water Bridge into Canada, was fined $1,500 in Sarnia court.

Cassandra Rose Olbrys, 26, of St. Clair Shores, Mich. pleaded guilty Monday to the Sept. 16 impaired driving charge.

Olbrys told a Canada Border Services Agency officer at 1 a.m. she did not want to come to Canada and thought she was in Detroit.

She said she had been trying to go home and had not been drinking, but breath tests showed her blood-alcohol level was two-and-a-half times over the legal limit.

Olbrys had no prior criminal record.

Olbrys should seek help in Michigan for the underlying issues that resulted in the offence, Justice Ann McFadyen said.

The fine was above the $1,000 minimum for a first offence. Olbrys was ordered to pay the fine immediately.

A one-year driving ban was imposed that only applies in Canada.

But Michigan authorities have an agreement to impose driving bans for drinking-and-driving convictions in Ontario, McFadyen said.