Delays and long tailbacks are being reported along the southbound A56 following a collision, say Highways England.
The accident happened between the M65 J8 and A679 Huncoat at around 8.30am on December 12.
Police say one lane was closed while vehicles were recovered.
A spokesman for Highways England said: "We have all lanes now open following vehicle recovery. Long delays will start to clear."
Drivers are being advised to allow extra time for their journeys.