The westbound lanes of Highway 401 have re-opened at Bloomfield Rd. In Chatham-Kent.
OPP Constable Jay Denorer says an eastbound tractor trailer crossing the median around 7:15am Tuesday, went through the cable barriers and crashed head-on into two westbound tractor trailers.
All three drivers were taken to the hospital with non-life threatening injuries.
Denorer admits the truck went through the cable barrier.
"Yes it did. It came through the centre median, came in contact with the cable barriers and then ended up colliding the two westbound transport trucks."
Denorer says the highway westbound will remain closed until around 2pm.
Charges are pending.
Lineup of vehicles on the westbound 401 after crossover crash at Merlin Road, December 11, 2018 (by AM800's Peter Langille)
Meanwhile, the founder of the group "Build the Barrier" says the crash on the 401 reinforces its position.
It has been fighting to get concrete barriers installed from Tilbury to London to prevent crossover crashes, similar to the one Tuesday morning.
The province has installed cable barriers while an environmental asssessment is underway to look at widening the highway.
Build The Barrier founder Alysson Storey says 'they dodged a bullet' in Tuesday's crash.
"If that had been a passenger vehicle, it could have been an entirely different outcome," she says.
She says the cable barriers are rated for passenger vehicles and small trucks, like pick-up trucks, but they do little to stop a transport truck.
"We have over 50% transport trailers every single day, so that means five out of ten drivers are not protected and that goes both ways because if that truck hits somebody else, there is going to be a pretty devastating outcome."
Storey says she is on pins and needles whenever she hears about a crash on the 401.
She began the group after a friend and the friend's five-year-old daughter were killed in a crash on the 401 in Chatham-Kent in August 2017.
The province has committed to installing concrete barriers along the 401, but no timeline has been given.
--Files from AM800's Rusty Thomson, Teresinha Medeiros and Peter Langille