A driver is in the hospital with serious injuries after crashing into a pole and tree Saturday.After 12:50 p.m. Port St. Lucie Police responded to a single-vehicle crash at the 500 block of SE Port St. Lucie Boulevard.Never miss anything: Sign up for personalized newsletters and alerts from WPBF 25 NewsAn adult male driver was airlifted with serious injuries, according to police.At this time, two eastbound lanes are closed.There is an ongoing and active investigation at this time.