The M6 has been closed northbound following a crash, resulting in significant traffic disruption.
One lane has been shut between the Lancaster and Carnforth junctions (J34 and J35) while emergency services attend the scene.
Traffic is now being allowed to pass via lanes two and three, but considerable tailbacks remain.
National Highways has warned delays are exceeding 60 minutes ahead of the incident.
Congestion has also stretched back around three miles.
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In posts on X, the organisation urged drivers to plan ahead and allow extra time if they are travelling in the area.
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