At 01:00 Hrs. The Milton Fire Department along with Turbot Township was dispatched to SR 254 in the area of Interstate 80 for a MVA involving a tractor trailer. Chief 1501 arrived to find a tractor trailer on its side at the I80 westbound onramp. The driver had self-extricated and walked to the nearby truck-stop for assistance. Chief 1502 made contact with the driver and took him back to the scene. The driver was not injured. Upon investigation, it was discovered the truck was hauling a variety of hazardous materials and EMA was immediately notified. Crews from Company 15 and 17 worked to contain the leaking chemicals as best they could until Northumberland County EMA arrived.