Kirsty Dyson, 28, of Sixth Avenue, admitted driving with excess alcohol when she appeared before magistrates in Mansfield on Wednesday.
The court heard an off-duty police officer spotted her slumped over the wheel of her Peugeot 208, at around 11.40pm on September 29, on Church Street, in Edwinstowe.
She drove off down a road that was closed and the officer confiscated her keys and called the police.
A breath test revealed that she had 83 microgrammes of alcohol in 100 millilitres of breath when the legal limit is 35 microgrammes.
She was fined £392 and ordered to pay a victim surcharge of £39 and £85 costs. She was banned from driving for 17 months.