A 68-year-old great grandmother was stumbling and her speech was slurred when her car was pulled over by police who saw her swerving on a Bourne back road.
Gillian Ward, of Baston Fen, Baston, appeared before Spalding magistrates on Thursday where she admitted drink driving.
She had 82 microgrammes of alcohol in 100 millilitres of breath. The limit is 35.
Rebecca Ritson, prosecuting, said police attended South Fen Road just before 6.30pm on July 6 when they saw Ward’s Mini Cooper travelling very slowly and swerving.
In mitigation, Phil Cookson said this was the first time Ward had ever appeared in court.
He said: “She’s ashamed and regrets her actions.”
But he said the swerving and driving slowly was “sensible” on South Fen Road to “save the bottom of the car”.
He said a ban would have a severe impact on Ward’s life as she would lose her job in Bourne and would be unable to help with childcare duties for her grandchildren and great grandchildren.
Ward was banned for 18 months, fined £100 and ordered to pay £85 costs and £20 victim surcharge. She can knock four months off her ban if she completes a course.