A man was critically injured in a collision between a pick-up truck and a tractor-trailer Monday on Interstate 75 in Marietta.

The crash, which happened about 6 p.m., and during the height of the evening commute, temporarily closed six of the roadway’s seven northbound lanes about a half-mile north of Delk Road.

A black GMC Sierra, driven by Abdoul Tamba, 40, of Dacula, was changing lanes and merged into the back of the semi, according to a news release from Marietta police. Tamba, who is in serious condition after being airlifted to Grady Memorial Hospital, told police traffic in front of him stopped and he tried to move to the lane to his left. The pick-up hit the right rear of the semi, which was driven by Jeffrey Cargle, 44, of Dallas.

The driver’s side of Tamba’s truck was forced under the semi, police spokesman David Baldwin said. A passenger in Tamba’s truck was not injured during the collision.

The crash is still under investigation, and anyone with information about the collision should call Marietta Police Officer Ben Wallace at 770-794-5266.