The arrest report states Judd had an odor of alcohol about her, watery eyes and dilated pupils, and she didn't remember how many drinks she had consumed.
Officer Carey John Adkerson said Judd consented to a breath test and registered a blood alcohol level of 0.175 percent — more than twice the 0.08 percent legal definition of drunken driving.
The officer said he stopped the vehicle because it was traveling 47 miles per hour in a 30-mile-per-hour zone.
Judd, who began her career as half of the mother-daughter act The Judds, posted the standard $500 bond for a first offense and was released.
The 39-year-old singer said in a written statement that she had been celebrating her impending wedding and a friend's birthday "and clearly let my excitement get the best of me."
"I know there is never a situation where drinking and driving is acceptable and I take full responsibility for my error in judgment."
Judd plans to marry longtime bodyguard D.R. Roach later this month.
A driving under the influence conviction can result in punishment ranging from a fine to community service to 48 hours in jail.
"What the World Needs Now Is Love," Judd's first album in three years, debuted at No. 1 on the Billboard country music chart in August.