Here's why traffic is building up on the M6 this morning
Traffic is already building up on both carriageways of the motorway on what is likely to be one of the busiest travel weekends of the year.
Highways England announced the work on Saturday morning, blaming "unforeseen circumstances".
The work between junction 36 and 37, just north of Lancaster, is scheduled to continue through the weekend.
It is expected to cause severe delays for motorists heading for the Lake District over the Bank Holiday weekend.
Highways England urged motorists to allow extra time for journeys.