One lane was closed on the westbound carriageway between junctions 1 (Broughton) and 3 (Wesham) at around 1.50pm today (Tuesday, February 15).
Three miles of congestion was reported in the area following the collision.
At 3pm, National Highways confirmed the lane had reopened, but residual delays of 20 minutes and three miles of congestion remained in the area.
Road conditions have since returned to normal.
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