Lindsay Lohan‘s mom was allegedly falling-down drunk when she got busted in a hit-and-run collision on Long Island, court papers revealed Sunday.

Dina Lohan, 57, had booze on her breath, bloodshot eyes and slurred speech when a cop found her behind the wheel of a 2020 Mercedes-Benz and spoke to her outside her home in Merrick, according to a felony complaint.

Upon getting out of the vehicle, Dina was also “unsteady on her feet and fell to the ground on her face,” the complaint says.

The “Celebrity Big Brother” star then accused Nassau County cop Christopher Koehle of “pushing her” during the incident around 7:25 p.m. Saturday, the complaint says.

Dina allegedly claimed she “had one glass of wine” but refused to complete a preliminary breath test or field sobriety tests at the scene, then refused a breath test at the police departments’ Central Testing Section, the complaint says.

Dina was allegedly followed to her home by the driver of a 2011 Honda who called 911 while following her after being rear-ended at the Merrick Mall, about three miles away.

The crash took place outside an Outback steakhouse, sources have said.

Dina was charged with felony DWI, based in a 2014 conviction for driving drunk on Long Island’s Northern State Parkway, and misdemeanor aggravated unlicensed operation of a motor vehicle because her license is suspended in July for failure to pay state taxes, the complaint says.

She was also charged with four violations for allegedly leaving the scene of an accident and driving without a license and in a vehicle without an inspection sticker and with an expired registration.

Dina spent the night in custody and pleaded not guilty during her arraignment Sunday morning in Hempstead Town Court.

She was released without bail pending another court appearance on Wednesday.

Defense lawyer Mark Jay Heller called her arrest “most unfortunate.”

“She has not been evaluated to have been drunk. And this simply is an allegation that remains to be proven by the district attorney’s office,” he added.