BFC along with mutual aid were alerted to this overturned tractor trailer on I-476 NB IAO of Route 1 in the early rush hour of Labor Day Weekend.  Arriving crews found a tandem tractor trailer on its side in the median with one subject requiring medical attention.  Fire crews remained on scene until released by PSP & PennDOT.  I-476 traffic was diverted for several hours while crews worked to clean up the accident scene.