The M6 has been closed in both directions at Leyland due to a serious accident.
Delays of up 30 minutes are being experienced by drivers after a caravan flipped over and hit the central reservation on the southbound carriageway at Junction 28.
A spokesman for the Highways Agency said: “The M6 northbound is currently closed within Junction 28 due to a serious incident.
“Traffic is being directed to exit the carriageway at Junction 28, to transit around the island and to then re-join the northbound carriageway on the far side of the same junction. There are currently long delays due to this closure.
“The M6 southbound is also currently closed from Junction 29 to 28 as a result of this incident.
“A signed diversion is in operation for southbound traffic, which should exit at Junction 29 and follow the “black circle” symbol to join the A6 westbound.
“Traffic should then take the A49 southbound to the junction with the B5256 where it should join the B5256 westbound and rejoin the M6 at Junction 28.”