Northbound I-475 is down to one lane between the Turpike and Airport Highway.
 / Nick McGill
A crash involving a semi has traffic down to one lane on I-475 between the Turnpike and Airport Highway.
According to our reporter at the scene, the semi is blocking the right lane near mile marker 7. Traffic is moving slow in the left lane and is backed up for a mile before the Airport Highway exit.
Authorities at the scene say there are no serious injuries to report, but that the semi driver was taken to the hospital with non life-threatening injuries. There is no word on the cause of the crash at this time.