The southbound lanes of the M1 Pacific Motorway are closed at Calga due to a truck fire.
A truck loaded with scrap metal caught alight at about 4.45am on Monday about 1km from the southbound side of the Mooney Mooney Bridge.
Fire crews are using foam to douse the flames and a heavy hazmat unit is on the way.
Police say the driver has not been injured.
There is heavy southbound traffic on the M1 which is being diverted onto Peats Ridge Road and rejoining the freeway at Calga.
