Mueller had slurred speech, fell backward several times when getting out of the car and couldn't stand on his own, the officer wrote. An open, partially full bottle of vodka was in the car.
Mueller scored a 0.35 percent on a breath analysis test about 7:30 p.m., more than an hour after the initial traffic stop, according to the report. The legal limit in the state is 0.08.
Mueller declined to comment Tuesday when reached by telephone.
A blood alcohol concentration of 0.35 percent can lead to unconsciousness or coma, according to the National Institutes of Health. A level of 0.4 percent can be deadly.
Court records list a 2004 speeding ticket from Blaine County as Mueller's only previous driving infraction or criminal offense.