More cyclists on The 606. View Full Caption DNAinfo/Alisa Hauser

BUCKTOWN — A woman was left unconscious after being hit by a cyclist on The 606, police said.

Officer Nicole Trainor, a Chicago Police spokeswoman, said that police and Chicago Fire Department workers responded to a 911 call at 6:34 p.m. Monday involving "a man bleeding from the head and a female unconscious from being hit by a bicycle."

The injured woman was taken to Stroger Hospital by ambulance, Trainor said.

Witnesses who saw the aftermath of the crash said it happened on the elevated Bloomingdale Trail near the Damen Avenue ramp, in the 1800 block of North Damen in Bucktown.

The Damen Arts Plaza on The 606. View Full Caption DNAinfo/Alisa Hauser

"Accident on 606 between biker and pedestrian. Looked painful," a witness posted on a Facebook page for Bucktown residents.

The woman, who is about 60 years old, was taken to the hospital in "serious to critical" condition, said Larry Langford, spokesman for the Fire Department. Her condition Tuesday was unknown.

The cyclist, a man in his 40s who stayed on the scene as emergency crews arrived, refused transport to a hospital, Langford said.