Incident
Trooper Christopher Lambert was struck and killed by a vehicle while investigating the scene of a prior crash on I-294 near Willow Road in Northbrook.
He was en route home when he encountered the three-vehicle crash on the left shoulder and stopped to render aid. He positioned his vehicle to protect the crash victims and he was standing outside of his vehicle when he was struck by another vehicle that failed to slow down or move over.
A nurse who was on the scene performed CPR until rescue personnel arrived. He was transported to Glenbrook Hospital where he was pronounced dead a short time later.
The investigation revealed that the driver who struck him was attempting to pass the accident scene by using the left shoulder and had admitted to smoking THC oil the previous day. He was charged with reckless homicide.
Trooper Lambert was a U.S. Army veteran and had served with the Illinois State Police for five years.
Survivors
He is survived by his wife, 1-year-old daughter, and parents.
In Our Keeping
- Permanent identifier
BO-US-IL-5761EB1A- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Trooper Lambert gave the Illinois State Police 5 years.
Thank you for your service to the people of Illinois. Thank you for your service before it. Gone but never to be forgotten.
Rest easy, brother.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Military Service
Christopher James Lambert served in the Army (2006â2011) before joining law enforcement.
Trooper Christopher James Lambert is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.
In IL, 842 of 1,318 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 63.9% of this state's fallen. That is 9.7 percentage points above the national rate of 54.2%.
At Illinois State Police, 17 of 67 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 25.4% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Christopher James Lambert's cause is highlighted.
How Christopher James Lambert Compares
Offender Outcome
Charged with homicide
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Christopher James Lambert is highlighted in Jan.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Christopher James Lambert was killed by automobile; narcotics involved.
Incident Location
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