Driver freed from rolled truck on Princes Freeway in Melbourne's west

A truck lost its load after rolling on the M80 at Laverton North. (ABC News: Natasha Schapova)

A large truck has rolled over on a ramp from the M80 Ring Road to the Princes Freeway at Laverton North in Melbourne, losing its entire load.

Emergency services have freed the 61-year-old female driver, who was trapped in the truck, and taken her to hospital.

Motorists are being advised of delays because of Princes Freeway closures.

A truck driver has been rushed to hospital after her vehicle rolled over on the Princes Freeway, causing major road delays in Melbourne's west.

Fire Rescue Victoria said it took 45 minutes to rescue the 61-year-old woman, who was trapped.

Several tonnes of chipboard lay scattered over the freeway and the slope beside the wrecked truck.

A fire spokesperson said it would take several hours to clean up the debris from the roadway.

He said it was not the first time an incident like had happened on the same bend in the road.

Emergency services freed a 61-year-old driver from the truck. (ABC News)

Victoria's transport department said all city-bound lanes of the Princes Freeway onto the West Gate Freeway and Geelong Road were closed.

The ramp from the M80 Ring Road Altona-bound onto the Princes Freeway is also closed.

Ambulance Victoria said its crews responded to the incident just before 7:30am on Saturday, and that Advanced Life Support paramedics treated one person at the scene and transported them to the Royal Melbourne Hospital.

Aerial footage taken of the rollover shows the vehicle's load spread across the ground and multiple lanes below. (ABC News)