The incident occurred at the Route 51 (Clairton Boulevard)-Borough Park Drive intersection at around 9:51 a.m., according to police Chief Donald R. Dolfi.
Witnesses told police that a "newer, red Ford Explorer" traveling southbound in the curb lane of Route 51 switched lanes and struck a blue car occupied by the injured man, Dolfi said.
The chief has since reported that the red vehicle could also have been a "Ford Escape-type SUV."
The blue car, which WTAE reports was being driven by teacher and new father Anthony Posa, was hit so hard on its passenger's-side rear door area that it went into a spin and ended up crashing into a utility pole, hitting the car's driver's side and left-front fender area and trapping Posa inside via its dashboard pinning his legs.
Emergency personnel from Medical Rescue Team South Authority and the Whitehall Fire Company were able to free Posa from the vehicle, but WTAE reports that Posa is in critical condition at UPMC Mercy Hospital.
Dolfi said that the victim had lacerations to his face, some head trauma and possible broken bones.
The weather was misty that day, the chief said.
After hitting the blue car, the red SUV swerved, but its driver regained control and continued southbound on Route 51, Dolfi said.
The SUV should have damage to its driver's side.
Anyone with information regarding this incident is asked to contact Whitehall police immediately at 412-884-1100.
The picture seen above of the SUV in question was provided by Whitehall police via security cameras.