Rhoades, a seven-term Republican from Schuylkill County, died the following day. His wife Mary was seriously injured.
Senavitis, who lives near Lehighton, was also charged Wednesday with vehicular aggravated assault while under the influence, vehicular homicide, drunken driving, reckless endangerment and several moving violations.
In an interview with The Associated Press last week, Senavitis denied responsibility for the crash and said alcohol played no role.
Senavitis told police in court documents that he only had one beer several hours before the crash.
Senavitis is scheduled to be arraigned later Wednesday.
