UPDATE THURSDAY: Landing Road, north of the Gladstone-Mt Larcom Road, was blocked yesterday afternoon after a heavy vehicle trailer rolled about 30m from the T-intersection at 2.30pm.

It took a crane to lift the trailer from the crash site, and the road was closed to all traffic for about an hour.

The trailer, carrying gravel, jacknifed across Landing Rd.

Witnesses at the scene said the deck of the trailer was dragged to its raised position as the trailer scraped its way along the road, spilling its contents as it went.

Police and firefighters were at the scene. The driver was uninjured.

Police are investigating.

WEDNESDAY 4pm: Police have confirmed no-one was injured in the trailer roll over.

Police are yet to interview the driver and confirm the cause of the accident. Southbound traffic on Landing Road is moving slowly.

3.15pm: A truck trailer has jack-knifed and flipped at the corner of Gladstone-Mt Larcom Road and Landing Road, spilling a load of crushed rock into a nearby creek.

Three police cars are at the scene. Traffic is moving slowly and motorists are urged to exercise caution.