A 25-year-old man is dead after a car and an OC Transpo bus collided on Tenth Line Road in Orléans on Thursday night.

It happened at about 11:30 p.m. adjacent to a construction zone on Tenth Line at Southfield Way. The severity of the crash caused several people to call 911, paramedics said in a media release.

The bus was heading north on Tenth Line and the car was heading south when they collided, Ottawa police said. There were no passengers in the car or the bus at the time.

It was an offset head-on crash, meaning that only a portion of the front end of the car collided with the bus.

"The collision created a long trail of debris as the front of the car partially disintegrated before finally striking a metal construction trailer," paramedics said.

The man in the Saturn Astra was in critical condition, suffering from multi-system trauma, when paramedics arrived. He was later pronounced dead at the scene.

The 58-year-old woman driving the OC Transpo bus was trapped for a time due to the extent of the damage, but did not suffer any serious injuries. She was assessed at the scene and did not need to go to hospital.

The Ottawa police collisions unit is investigating.