One person was critically injured in a three vehicle crash on Interstate 41 in Dodge County. Shortly before 5pm Wednesday rescue personnel were called to t he scene on 41 north of state Highway 28 in the town of Theresa. A northbound passenger car merged abruptly to the left lane and braked hard upon approach to a crossover . That vehicle was struck from behind by another northbound pickup. The passenger car was pushed into the southbound lanes from that collision, and subsequently struck by a southbound straight truck. The car driver was flown to a hospital with possible life-threatening injuries. Nobody else was injured. Due to the seriousness of the injury and the blockage of traffic lanes by crashed vehicles, I-41 southbound traffic was closed for almost 3 hours. All lanes were open as of 7:50 pm.