UPDATE: 6.00pm

The A48 has now reopened more than eight hours after it was shut.

Structural engineers have removed the vehicle involved, confirmed as a lorry. 

UPDATE: 1.10pm

A Gwent Police spokeswoman said: "At approximately 11.05pm on Wednesday October 5 Gwent Police were called to reports of an RTC on the A48 between Caerwent and the roundabout for Chepstow and Caldicot.

"The incident involved a single vehicle.

"The road has remained closed for some time while the vehicle was recovered and the debris was cleared.

"There were no serious injuries."

UPDATE: 12.34pm

THE A48 at Crick near Caldicot is closed in both directions after a vehicle crashed into a bridge last night. 

The closures are in place between Crick Road junction and the Dinham Road junction.