Drivers are facing serious delays in both directions on the A34 tonight after a lorry crashed into the central reservation.

The HGV hit the barrier about 3.45pm, just north of the Milton interchange on the southbound carriageway.

Chris Kearney, a spokesman for Thames Valley Police, said the driver managed to park the lorry in a layby following the collision, but debris has spread over both carriageways which are now closed.

Police and Highways Agency staff are now at the scene to deal with the aftermath of the crash.

Mr Kearney added: “There is a lot of debris on both carriageways so we have had to close the A34 in both directions.

“The southbound entry slip road is closed at Marcham and the northbound entry slip road is closed at Milton.

“Drivers are being diverted and are advised to seek alternative routes.”

James Wright, a spokesman for the Highways Agency, said the agency hoped to reopen one lane in both directions once the debris had been cleared.

But he could not say how long it would be before this would take place.

Mr Wright added: “The driver of the HGV was okay and there were no casualties in other vehicles, so we hope that will limit the length of the police investigation.”