Prosecutors say Ignacio Ramirez was drunk when he drove into Frederick Kobrick early Tuesday morning.
Kobrick was hit while riding his bicycle in the 1100-block of West 18th Street.
Ramirez is also accused of leaving the scene of the accident. Police found him a short time later just a few blocks away.
Ramirez is charged with aggravated DUI, reckless homicide and leaving the scene of a deadly accident.