Parts of the A1(M) between Welwyn and Hatfield will be closed for reconstruction and litter clearance next week.
From Monday, April 24 to Wednesday, April 26, the closure will be in place from 10pm to 5am.
National Highways will carry out a litter clearance, which will take place on the A1(M) southbound carriageway between Junction 6 and Junction 4.
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The roadworks start near the roundabout by Pets at Home in Hatfield and continue, to the Hertford Road roundabout.
One.network said: "Carriageway closure, entry slip road closure and lane closures for maintenance works."
The A1(M) northbound will also experience reconstruction and repair works from Junction 6 to Junction 7.
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National Highways will be repairing the roads from Monday, April 24 to Thursday, April 27 between 9pm and 5am.
These repairs will start around the Hertford Road roundabout and continue to just before Old Knebworth Lane.
Residents are likely to experience delays due to these roadworks.
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