This article was originally published on March 30. 

In a bizarre car crash last night, a herd of cows got loose on highway 401 last night and wreaked havoc for drivers. Around 11:35 PM, the OPP reported that there had been a collision involving a cattle carrier truck and as a result, a number of the cows had escaped from the truck and began roaming the highway. 

The collision happened in the westbound express lanes, near Hurontario. The truck driver reportedly hit a guard rail, causing the trailer on his truck to split open along one side. He ended up being transported to the hospital by paramedics with moderate injuries. That was only half of the problem though. On top of a big truck blocking traffic, in the collision the cows he was hauling managed to escape. 

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About one dozen of the cows were able to get out of the truck after the crash and began roaming the 401, which is Canada's biggest and busiest highway. OPP had to shut down the express lanes in both directions, as they worked with firefighters to try and round up all the cows. Unfortunately, this took almost seven hours to accomplish, wreaking havoc for drivers both last night and well into this morning. 

#hwy401 westbound Express lanes closed at Hurontario St for collision involving a caddle carrier. Cows loose on Hwy401 in Mississauga. #Mississauga #Collision #HeavyRescue401 #CowsLooseOnTheHighway pic.twitter.com/A6Ol6SCbqx

March 30, 2019

OPP Sergeant Kerry Schmidt reported the crash on his Twitter but he wasn't the only one sharing pics of the whole cow ordeal. Several other drivers who were affected by this bizarre crash took to Twitter to share their experiences. 

Drivers and reporters at the scene shared their own pictures and videos of the cows on the highway. 

Bunch of cows on the 401 in Ontario. Are they on their way to yo? pic.twitter.com/oo1bEgPdYM

March 30, 2019

Over a dozen cows escaped a damaged transport truck that crashed on Hwy 401 at Hurontario. @OPP_GTATraffic and @MississaugaFES eventually managed to coral the cattle for transport by a farmer. Traffic is understandably a mess in the area. pic.twitter.com/0VeshIKbbL

March 30, 2019

VIDEO: Cows roaming all over Highway 401 near Hurontario St in #Mississauga after the truck they were in struck the bull nose & split the side open. Driver to hospital, non-life threatening. @IAFF1212 and @OPP_HSD worked to corral the cows. @MississaugaFES @firechieftim pic.twitter.com/DuONklEhcw

March 30, 2019

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Others also expressed their complete disbelief that they were actually stranded in traffic because of a herd of cows. 

WHY AM I STILL STUCK ON THE 401 CUZ OF THESE FUCKING COWS

March 30, 2019

DAWG TELL ME HOW IM STUCK ON THE 401 IN MISSISSAUGA AND THERES A FUCKING HERD OF COWS WALKING DOWN THE HIGHWAY

March 30, 2019

The highway has since re-opened as OPP and fire crews were able to round up the cows, but it's not all happy endings. CBC reports that unfortunately some cows were injured in the crash and had to be put down.