Police stopped the 79-year-old after he was seen driving in the breakdown lane with a Christmas tree tied atop his Subaru.
The charges against Torn were dismissed Friday because the actor completed a program that gives drunken-driving defendants a chance to clear their records.
But another case is pending against the celebrity: charges that he broke into a bank in January while intoxicated and armed. He returns to court Tuesday in that case.
The Associated Press contributed to this report.