Eight Injured as Police Convoy Collides on Route 12 in Spring Grove
- Eight injured in Spring Grove crash
- Two medical helicopters dispatched
- Crash involved police squad on Route 12
- Investigation opened into high‑speed pursuit
- Roads closed for cleanup
A multi‑vehicle crash involving a police squad and civilian cars left eight people injured on Route 12 in Spring Grove Sunday night.
The collision occurred at approximately 9:45 p.m. local time, just east of the intersection with County Road 7, officials said.
Emergency crews arrived within minutes, finding two police cruisers, a pickup truck and a sedan tangled together.
Victims were transported to nearby hospitals, with four taken to Memorial Hospital in Waukegan and the remaining four to St. John's Medical Center in Zion.
- Eight people injured, four in each hospital • Two police cruisers and two civilian vehicles involved • Crash location: Route 12 near County Road 7
Medical Helicopters Dispatched to Spring Grove Crash
Two air‑medical helicopters from the region's critical‑care network were scrambled within ten minutes of the first 911 call.
The first helicopter, a Bell 412, lifted off from the Lake County heliport at 9:58 p.m., while the second, an Airbus H135, departed the McHenry County base at 10:02 p.m.
Both aircraft landed on the emergency staging area set up on the north shoulder of Route 12, allowing paramedics to load the most severely injured.
Officials said the rapid air‑lift helped stabilize two victims with suspected internal injuries before they were taken to the trauma center at Memorial Hospital.
- Bell 412 from Lake County heliport • Airbus H135 from McHenry County base • First patient air‑lifted at 10:12 p.m.
First Responders Detail Chaotic Scene
Witnesses described a scene of flashing lights, twisted metal and the smell of gasoline as they approached the crash site.
"I heard a loud bang and saw the police cars spin out of control," said a local resident who stopped to call 911.
Police officers, fire crews and EMTs worked side by side, using hydraulic rescue tools to free a trapped driver from the pickup truck.
The fire department deployed two ladder trucks to cool the vehicle's engine, preventing a fire that could have endangered the crowd.
- 12 emergency personnel on scene within five minutes • Hydraulic spreaders used to cut through vehicle frame • Ladder trucks positioned to protect bystanders
Investigation Launches into Pursuit and Crash
State police opened a formal investigation into the events leading up to the collision, focusing on a high‑speed pursuit that began earlier that evening.
According to the Illinois State Police, a motorcyclist was spotted traveling at over 100 mph through a construction zone on Route 12 at 9:10 p.m., prompting a chase that involved the Spring Grove police squad.
Sources confirmed the pursuit continued for several miles before the motorcyclist was apprehended near Wauconda, after which the squad returned to Route 12.
Officials said the sudden deceleration and lane changes required to re‑enter traffic may have contributed to the loss of control that caused the crash.
- Pursuit began at 9:10 p.m. • Motorcyclist clocked >100 mph in construction zone • Police squad re‑entered Route 12 at 9:38 p.m.
Community Reaction and Traffic Impact
Local officials closed Route 12 between County Road 7 and the Spring Grove post office for cleanup, diverting traffic onto County Road 12A and causing delays of up to 45 minutes during the evening rush hour.
Mayor Laura Martinez held a brief press conference at 11:30 p.m., assuring residents that the road would reopen by the following morning.
"Our first priority is the safety of our citizens and the swift care of those injured," Martinez said, adding that the city will review its protocols for police pursuits in residential areas.
Residents expressed concern over the high‑speed chase, with several posting comments on the town's Facebook page demanding stricter enforcement of speed limits in construction zones.
- Route 12 reopened at 6:15 a.m. on Monday • Detour traffic increased on County Road 12A by 30% • City council to vote on pursuit policy amendment
What Comes Next for the Injured and Investigation
The eight injured patients are expected to remain under observation for at least 24 hours, with two scheduled for surgery to address internal bleeding.
Hospital spokesperson Karen Liu confirmed that all patients are stable and that the medical teams are coordinating with law‑enforcement officials to document injuries for the ongoing investigation.
The Illinois State Police will release a preliminary report within 48 hours, focusing on vehicle data, dash‑cam footage and the timing of the pursuit.
Authorities have also promised to hold a community forum next week to address public concerns about police chase protocols and road safety.
- Preliminary report due in 48 hours • Two patients undergoing surgery • Community forum scheduled for September 21
FAQs
[{"q":"How many people were injured in the Spring Grove crash?","a":"Eight people were injured, with four taken to Memorial Hospital and four to St. John's Medical Center."},{"q":"What emergency assets responded to the scene?","a":"Two medical helicopters, fire trucks, police units and EMTs were dispatched, and a staging area was set up on Route 12."},{"q":"Why did the police squad become involved in the crash?","a":"The squad was returning from a high‑speed pursuit of a motorcyclist traveling over 100 mph through a construction zone, and re‑entered traffic on Route 12, leading to the collision."}]