Officers from Heddlu Gwent Police were called at about 9pm on Tuesday (January 24) to reports of a road traffic collision on the A4042 between Hardwick and Llanellen, south-east Wales.
The road was still closed for resurfacing this morning (January 25). The oil had begun to solidify on the road, frustrating attempts to re-open the road.
A police statement said: “The road remains closed at this time and the clean-up operation is anticipated to continue throughout the day.”
Gwent Police shared an image of the overturned lorry on its Facebook page.
Significant arm injuries
The driver of the tanker suffered significant arm injuries and was sent to Neville Hall hospital for treatment.
Diversions are in place at the Hardwick roundabout A4042 south bound and on the A4042 junction with B4269 at Llanellen.
Police are appealing for anyone who may have witnessed the incident to contact them.
The accident is the second incident involving a lorry spilling its load and causing traffic chaos this month.
Motorists were stuck on the M1 earlier this month (January 10), after a collision caused a lorry to shed its load of jam onto the motorway.
The accident involved a collision of four lorries on the motorway in Bedfordshire southbound between junctions 12 and 13 at about 07.00am.