A Portland man was critically injured Thursday morning when he lost control of his car and crashed into trees on the Brunswick exit ramp off Interstate 295 northbound at mile 28.

Christopher Doran, 35, suffered head injuries in the crash, which happened at 7:45 a.m., police said. Doran lost control of the Subaru station wagon he was driving as he entered the turn on the exit ramp and then overcorrected and hit the trees, destroying the car. It was not clear whether he was wearing a seat belt.

The crash site was closed for three hours. Initially, authorities requested a LifeFlight medical helicopter but one could not take off because of weather conditions. A ground ambulance brought Doran to Maine Medical Center in Portland, where he was admitted for treatment.