Luton Borough Council is asking drivers to be patient when they close two junctions of the M1 near Luton next month, as part of a £30 million scheme to cut congestion.
The main road from the M1 to the airport, through junctions 10 and 10a, will close between 4 and 9 March.
Work's already started on the project, which should be completed by next summer.
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Starting cold and dry Boxing Day. Wet and windy later.
The Met Office has issued a yellow cold weather alert and there's the risk of snow in places later on Boxing Day.
Mostly dry and bright, but chilly. Frost tonight.