The 2000 Honda motorcycle was traveling at a high rate of speed on the outbound Kennedy Expressway when it rear-ended a vehicle near Division Street, shortly before 2 a.m., an Illinois State Police District Chicago sergeant said.
A witness said the motorcyle was going at least 80 or 85 mph.
The 20-year-old woman, whose identity was withheld pending family notification, was ejected from the motorcycle, landed in the roadway, and was struck by a car, police said.
The man driving the motorcycle was taken in critical condition to Northwestern Hospital.
Only the man was wearing a helmet, police said.
Shortly after the Kennedy was re-opened to traffic, another accident was reported near Division Street. In that case, a vehicle reportedly struck a wall sometime after 4 a.m.
R.I.P (poor passenger)