All eastbound lanes of Highway 401 west of Woodstock have reopened after being closed Wednesday due to a collision and truck fire.

According to the OPP, three transport trucks collided on the highway just after 10:30 a.m., causing one to catch fire.

The three trucks were reportedly close behind a string of snow plows, but police remain unsure how the chain-reaction crash happened.

Two drivers suffered minor injuries and were taken to hospital as a precaution.

An unknown quantity of diesel and gasoline was spilled and the Ministry of the Environment was called in to assist with the clean-up.

Although there was snow falling in the area at the time, it's not immediately clear if weather contributed to the collision.

Multiple crashes across the region

Around 2:30 Wednesday afternoon, emergency responders in Huron County responded to three separate collision on Highway 4 (London Road) between Mill Road and Roman Road, north of Brucefield.

OPP say in the first crash a northbound pickup and a southbound SUV collided. The 21-year-old male driver of the SUV suffered minor injuries, while his 20-year-old female passenger suffered serious but non-life threatening injuries.

Another two-vehicle collision took place shortly afterward, which was followed quickly by a four-vehicle collision. There were no injuries in the crashes.

An investigation continues into the collisions and Highway 4 was expected to remain closed from Mill Road to Roman Road for some time.

Also on Wednesday, around 10:30 a.m., a female driver had to be extricated from her vehicle after crashing into a pole on Veterans Memorial Parkway near River Road in London.

The driver’s side of the vehicle struck the pole, knocking down wires. Hydro crews were on hand to assist at the scene. 

Most of the driver’s side of the vehicle had to be removed to free the woman, who had minor injuries.