Bleeth, 33, was charged with driving under the influence of narcotics when she was stranded in the Detroit area following the Sept. 11 attacks on the World Trade Center and Pentagon. The plea agreement reduced the charge to operating a motor vehicle while impaired.
She also was charged with possession of a controlled substance after police raided her hotel room. That charge was dismissed under the agreement.
Bleeth played Caroline Holden on the television lifeguard series "Baywatch" and later played a character on the short-lived, evening soap, "The Titans." In 1995 she was voted one of People's "50 Most Beautiful."
Bleeth's career began when she was just 6 months old -- featured as the Johnson & Johnson Baby. She appeared in a Max Factor campaign with Cristina Ferrare when she was just 6.
Sentencing is set for Jan. 9.