Officers and a doctor who was driving by found the woman breathing but with a faint pulse and a head injury after she was struck by the southbound truck on Knickerbocker Avenue near the southwest corner of Day Avenue just before 8:45 p.m.
She was taken to Hackensack University Medical Center with what Police Chief Robert Chamberlain said were severe injuries. Authorities said they didn't have an update on her condition Tuesday.
The 58-year-old driver from Fair Lawn wasn't injured.
The Tenafly Volunteer Ambulance Corps responded, along with paramedics from Englewood Hospital and Medical Center. The Bergen County Prosecutor's Office Fatal Accident Investigation Unit also responded, and the county sheriff's Bureau of Criminal Identification collected evidence.
The chief asked that anyone who might have seen the crash call Tenafly PD: (201) 568-5100
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